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    • 15 October 2024

    • sur Fernando Quadro: Interpolação de dados usando GDAL

      Publié: 15 October 2024, 10:03pm CEST

      Interpolação espacial é uma técnica para estimar valores desconhecidos em locais com base em valores conhecidos em pontos próximos, criando uma superfície contínua a partir de dados discretos.

      ? Como pode ser útil?

      ? Prevê valores em locais não amostrados.
      ? Preenche lacunas de dados para cobertura de área completa.
      ? Cria superfícies contínuas a partir de dados de pontos.
      ? Suporta tomada de decisão em vários campos.
      ? Permite mapeamento temático e visualização de padrões.

      ? A interpolação espacial com GDAL aprimora seus dados GIS

      A interpolação espacial é uma técnica crucial de engenharia de recursos em GIS que estima valores desconhecidos entre pontos de dados conhecidos.

      GDAL (Geospatial Data Abstraction Library) oferece ferramentas poderosas para implementar vários métodos de interpolação. Aqui está uma visão geral das principais técnicas:

      ?Ponderação de distância inversa (IDW)
      ? Método simples e rápido
      ? Assume que pontos próximos têm mais influência
      ? Ideal para estimativas rápidas

      ?Krigagem
      ? Método geoestatístico
      ? Considera a autocorrelação espacial
      ? Fornece estimativas de incerteza

      ?Vizinho Natural
      ? Adapta-se a dados irregularmente espaçados
      ? Interpolação suave, sem efeito de alvo
      ? Bom para modelagem de terreno

      ?Spline
      ? Cria uma superfície suave
      ? Útil para fenômenos gradualmente variáveis
      ? Suporta parâmetros de tensão e regularização

      A escolha do método de interpolação correto depende das características dos seus dados e dos requisitos do seu projeto.

      Gostou desse post? Conte nos comentários ?

      Fonte: webgis.tech
      Instagram: [https:]]
      LinkedIn: [https:]]

    • sur Mappery: The World with Chandeliers

      Publié: 15 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Berl sent me this, he said “Seen on one of the walls of the ‘Leyton Engineer’ pub in East London in what used to be Leyton Town Hall. I was on my way to see a Leyton Orient game and popped in to have a bite to eat and a tipple and meet my son.”

      Glad to see that Leyton Council had such a global view.

      For those of our readers who don’t know of Leyton Orient, they are a football club based in East London. The name apparently came about as a suggestion from one of their players, Jack R Dearing, who had worked on the Orient Stream Navigation Company (otherwise known as the Orient Line).

    • sur The A-Z Music Map

      Publié: 15 October 2024, 10:54am CEST par Keir Clarke
      Step into the heart of Swinging London and let its iconic music lead you through the streets of a city alive with creativity, rebellion, and freedom. The 'London A to Z 1962-1973' interactive map will take you on a sonic journey through the London locations that helped shape one of the most exciting periods in music history. LONDON A to Z 1962-1973 is an interactive map of songs about
    • 14 October 2024

    • sur What is Your Neighborhood Scare Score?

      Publié: 14 October 2024, 11:35am CEST par Keir Clarke
      The Spookiest ZIP Codes in the U.S.As Halloween approaches, many of us are stocking up on candy, preparing costumes, and decking our homes with spooky décor. But did you know that how much candy, costumes, and Halloween decorations you buy might reveal just how into Halloween your neighborhood is? That’s the concept behind Instacart’s brand-new interactive map, Explore America’s Haunts, which
    • 13 October 2024

    • sur Open Places Map

      Publié: 13 October 2024, 12:47pm CEST par Keir Clarke
      Welcome to OpenPlacesMap! Are you bored of living in Plainville, USA? Don't you wish your hometown had a more exciting name? Now you can make it happen! OpenPlacesMap is an interactive map that empowers you to redefine your neighborhood. Simply click on any country, state, city, or neighborhood label and change its name to anything you want! Now you can live in Gotham City, Hogwarts, or

    • sur Mappery: A Street Guide that is not Mobile

      Publié: 13 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Scott Simmons found this street guide in his hotel, “Just got into my room in Taichung, Taiwan and found the wall to be a handy guide. Problem is, I cannot easily carry the wall into the streets, so the picture will have to do. This hotel is just a few blocks from GIS.FCU (GIS Research Center at Feng Chia University), a huge contributor to international standardization ( [https:]] ).”

      I wonder what the thinking was to use this street map as decoration?

    • sur Sean Gillies: Running again

      Publié: 13 October 2024, 1:51am CEST

      After I gave up on The Bear 100 and Black Squirrel in August, I stopped running for 6 weeks to let my Achilles tendonitis subside. I quit using the stair stepper and elliptical machines at the gym, too. My only activities were bike commuting, yoga, weight lifting, and a weekly "HIIT the water" class. I've joked about aquasizing, but have really been getting into this class. The instructor is gung ho, the regulars are friendly, and it's a good, low impact, workout. I'm going to keep doing it this fall and winter, for sure.

      On the 20th of September I went for a flat 2 mile run at Pineridge Open Space. It felt great to run outdoors on dirt, and I didn't feel any worse afterwards. I did another easy, flat trail run 4 days later. This week I did two 3.5 mile runs on trails and another session on an elliptical trainer. 2 hours in all. I'm going to try to increase to 3 hours a week by the end of the year.

      I'm grateful to be able to run again. With some luck, 2025 could be a good year.

    • 12 October 2024

    • sur Mappery: Spot the Map

      Publié: 12 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reinder sent this pic of a shop window in Mafra in Portugal. He said there is quite a lot of Mappery in there. I found 6 and maybe 7, how about you?

    • sur Sean Gillies: Rasterio 1.4.0

      Publié: 12 October 2024, 3:35am CEST

      A month ago I wrote a long-ish post about Fiona 1.10.0. I'll try to keep this one shorter. Rasterio 1.4.0 has three main changes: Python openers, detailed error chaining, and a new statistics API.

      Python openers can connect filesystems implemented in Python, like fsspec or tiledb.vfs, to GDAL's own virtual filesystem machinery. In most cases, you should reply on GDAL's built-in virtual filesystem handlers. On the other hand, if you have unique or proprietary data access protocols, then Rasterio's new openers may be useful.

      Often enough, I want more visibility into the errors that occur during GDAL I/O functions. I'd like to see all the errors, not just the last one. So, I've implemented Python-like chaining of GDAL errors. It's not perfectly analogous, because we don't have frames for GDAL code like we do for Python, but look at the kind of details you can get now:

      >>> src.read()
rasterio._err.CPLE_AppDefinedError: TIFFFillTile:Read error at row 512, col 0, tile 3; got 38232 bytes, expected 47086

The above exception was the direct cause of the following exception:

rasterio._err.CPLE_AppDefinedError: TIFFReadEncodedTile() failed.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "rasterio/_io.pyx", line 968, in rasterio._io.DatasetReaderBase._read
    io_multi_band(self._hds, 0, xoff, yoff, width, height, out, indexes_arr, resampling=resampling)
  File "rasterio/_io.pyx", line 207, in rasterio._io.io_multi_band
    with stack_errors() as checker:
  File "rasterio/_io.pyx", line 213, in rasterio._io.io_multi_band
    return checker.exc_wrap_int(retval)
  File "rasterio/_err.pyx", line 307, in rasterio._err.StackChecker.exc_wrap_int
    raise last
rasterio._err.CPLE_AppDefinedError: /app/tests/data/corrupt.tif, band 1: IReadBlock failed at X offset 1, Y offset 1: TIFFReadEncodedTile() failed.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "rasterio/_io.pyx", line 650, in rasterio._io.DatasetReaderBase.read
    out = self._read(indexes, out, window, dtype, resampling=resampling)
  File "rasterio/_io.pyx", line 971, in rasterio._io.DatasetReaderBase._read
    raise RasterioIOError("Read or write failed. See context for details.") from cplerr
rasterio.errors.RasterioIOError: Read or write failed. See context for details.

      Lastly, the flawed, multimodal statistics() method of datasets has been deprecated and is replaced by new, simpler stats(), clear_stats(), and update_stats() methods.

      Rasterio 1.4.0 remains limited to "classical" rasters, those with a handful of bands or channels all of the same type. For hyperspectral data cubes and the like, you should use h5py, xarray, or other emerging software. I'm quite interested in working on new software in that area, but I'd like to do so without any classical raster legacy.

    • 11 October 2024

    • sur Mappery: Arctic Circle

      Publié: 11 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Matthew Edney sent us this, he said “My father in law at the Arctic Circle, in Dalton, Alaska, the dot for the location is right by his head”

      Pretty Cool

    • sur Florida's Waffle House Index Score

      Publié: 11 October 2024, 9:43am CEST par Keir Clarke
      In the wake of Hurricane Milton, which made landfall on Florida’s Gulf Coast with devastating winds and flooding, emergency responders are working to assess the damage. One unconventional but, some argue, effective tool for gauging the situation is the "Waffle House Index," a metric used by the Federal Emergency Management Agency (FEMA) to evaluate the severity of storms and guide disaster
    • 10 October 2024

    • sur TorchGeo: v0.6.1

      Publié: 10 October 2024, 8:22pm CEST
      TorchGeo 0.6.1 Release Notes

      This is a bugfix release. There are no new features or API changes with respect to the 0.6.0 release.

      This release fixes an important security vulnerability and properly documents a lack of support for rasterio 1.4. All users are recommended to update to TorchGeo 0.6.1 if they are using torchgeo.models.get_weight.

      Dependencies
      • rasterio: 1.4 not yet supported (#2327)
      Datamodules
      • Datamodule: use persistent workers for parallel data loading (#2291)
      • OSCD: update normalization statistics (#2282)
      Datasets
      • Datasets: add support for os.PathLike (#2273)
      • GeoDataset: allow a mix of str and pathlib paths (#2270)
      Models
      • API: avoid use of eval in get_weight (#2323)
      Tests
      • CD: set up continuous deployment to PyPI (#2342)
      • CI: install tensorboard to speed up notebooks (#2315)
      • CI: install TorchGeo from checked out repo (#2306)
      • dependabot: only update npm lockfile (#2277)
      • prettier: ignore cache directories (#2278)
      • prettier: prefer single quotes (#2280)
      • pytest: set default --cov and --cov-report (#2275)
      • pytest: set matplotlib backend locally too (#2326)
      • pytest: silence numpy 2 warnings in PyTorch (#2302)
      • ruff: remove NPY tests now that we test numpy 2 in CI (#2287)
      Documentation
      • Alternatives: add scikit-eo to list of TorchGeo alternatives (#2340)
      • Contributing: installation-agnostic prettier usage (#2279)
      • Datasets: move dataset CSV to subdirectory (#2281, #2304)
      • Datasets: update NAIP resolution (#2325)
      • Tutorials: fix NAIP downloads by signing URL (#2343)
      • Tutorials: update recommended strategy for raster datasets containing images and masks (#2293)
      Contributors

      This release is thanks to the following contributors:

      @adamjstewart
      @calebrob6
      @MathiasBaumgartinger
      @Nowosad
      @sfalkena

    • sur Mappery: Samsonite is a Global Brand

      Publié: 10 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Spotted by Reinder ” in a street with many shops in The Hague, it’s Wednesday throwing away cardboard boxes day”

    • sur Real-Time Animated Wind Maps

      Publié: 10 October 2024, 10:34am CEST par Keir Clarke
      In recent weeks, ferocious winds have dominated the headlines. The devastating impact of Hurricane Milton, arriving so soon after Hurricane Helene rampaged through Florida, has left many communities reeling from the destructive power of these tropical storm-force winds. In the last fortnight, I've often found myself drawn to Earth Nullschool's real-time map of global wind conditions.
    • 09 October 2024

    • sur OTB Team: OTB User Days 2024

      Publié: 9 October 2024, 4:46pm CEST
      Dear all, The OTB User Days 2024 will be held from November 21th to November 22th in Toulouse, France. The event will be held at Artilect Fablab On November 21th, presentations will be held in the morning, and brainstorming in the afternoon : On November 22th : Please register here if you plan to come and you […]

    • sur Mappery: Gordon the Globe

      Publié: 9 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Elizabeth spotted this advert on the London Underground. Is Gordon smiling or shocked or ..?

    • sur Animal Migration Tracking

      Publié: 9 October 2024, 9:34am CEST par Keir Clarke
      The Atlas of Ungulate MigrationUngulates, large herbivorous mammals with hooves, are a vital part of many ecosystems across the globe. These animals, including species like wildebeest, caribou, elk, and zebra, often migrate seasonally over vast distances. These migrations play a crucial role in maintaining the resilience of ecosystems, supporting biodiversity, and even sustaining local economies
    • 08 October 2024

    • sur Oslandia: New release for QField : 3.4 “Ebo”

      Publié: 8 October 2024, 5:46pm CEST

      Oslandia is the main partner of OPENGIS.ch around QField. We are proud today to forward the announcement of the new QField release 3.4 “Ebo”.

      Main highlights

      A new geofencing framework has landed, enabling users to configure QField behaviors in relation to geofenced areas and user positioning. Geofenced areas are defined at the project-level and shaped by polygons from a chosen vector layer. The three available geofencing behaviours in this new release are:

      • Alert user when inside an area polygon;
      • Alert user when outside all defined area polygons and
      • Inform the user when entering and leaving an area polygons.

      In addition to being alerted or informed, users can also prevent digitizing of features when being alerted by the first or second behaviour. The configuration of this functionality is done in QGIS using QFieldSync.

      Pro tip: geofencing settings are embedded within projects, which means it is easy to deploy these constraints to a team of field workers through QFieldCloud. Thanks Terrex Seismic for sponsoring this functionality.

      QField now offers users access to a brand new processing toolbox containing over a dozen algorithms for manipulating digitized geometries directly in the field. As with many parts of QField, this feature relies on QGIS’ core library, namely its processing framework and the numerous, well-maintained algorithms it comes with.

      The algorithms exposed in QField unlock many useful functionalities for refining geometries, including orthogonalization, smoothing, buffering, rotation, affine transformation, etc. As users configure algorithms’ parameters, a grey preview of the output will be visible as an overlay on top of the map canvas.

      To reach the processing toolbox in QField, select one or more features by long-pressing on them in the features list, open the 3-dot menu and click on the process selected feature(s) action. Are you excited about this one? Send your thanks to the National Land Survey of Finland, who’s support made this a reality.

      QField’s camera has gained support for customized ratio and resolution of photos, as well as the ability to stamp details – date and time as well as location details – onto captured photos. In fact, QField’s own camera has received so much attention in the last few releases that it was decided to make it the default one. On supported platforms, users can switch to their OS camera by disabling the native camera option found at the bottom of the QField settings’ general tab.

      Wait, there’s more

      There are plenty more improvements packed into this release from project variables editing using a revamped variables editor through to integration of QField documentation help in the search bar and the ability to search cloud project lists. Read the full 3.4 changelog to know more, and enjoy the release!

       

      Contact us !

      A question concerning QField ? Interested in QField deployment ? Do not hesitate to contact Oslandia to discuss your project !

       

    • sur The American Election & the Rest of the World

      Publié: 8 October 2024, 12:20pm CEST par Keir Clarke
      With the world closely watching the U.S. 2024 election, what could a Trump or Harris presidency mean for international stability? From rising tensions in Eastern Europe to critical climate action, the global implications of the U.S. election stretch far beyond American borders.The European Union Institute for Security Studies (EUISS) has been exploring "how a Trump or a Harris presidency

    • sur Mappery: The Map Shop

      Publié: 8 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reinder spotted this selection of maps for sale in a souvenir shop at Wawel Castle, Cracow, Poland. They like a map there!

    • sur OPENGIS.ch: QField 3.4 “Ebo”: Geofencing and processing out of the box

      Publié: 8 October 2024, 6:45am CEST

      QField 3.4 is out, and it won’t disappoint. It has tons of new features that continue to push the limits of what users can do in the field.

      Main highlights


      A new geofencing framework has landed, enabling users to configure QField behaviors in relation to geofenced areas and user positioning. Geofenced areas are defined at the project-level and shaped by polygons from a chosen vector layer. The three available geofencing behaviours in this new release are:

      • Alert user when inside an area polygon;
      • Alert user when outside all defined area polygons and
      • Inform the user when entering and leaving an area polygons.

      In addition to being alerted or informed, users can also prevent digitizing of features when being alerted by the first or second behaviour. The configuration of this functionality is done in QGIS using QFieldSync.

      Pro tip: geofencing settings are embedded within projects, which means it is easy to deploy these constraints to a team of field workers through QFieldCloud. Thanks Terrex Seismic for sponsoring this functionality.

      QField now offers users access to a brand new processing toolbox containing over a dozen algorithms for manipulating digitized geometries directly in the field. As with many parts of QField, this feature relies on QGIS’ core library, namely its processing framework and the numerous, well-maintained algorithms it comes with.

      The algorithms exposed in QField unlock many useful functionalities for refining geometries, including orthogonalization, smoothing, buffering, rotation, affine transformation, etc. As users configure algorithms’ parameters, a grey preview of the output will be visible as an overlay on top of the map canvas.

      To reach the processing toolbox in QField, select one or more features by long-pressing on them in the features list, open the 3-dot menu and click on the process selected feature(s) action. Are you excited about this one? Send your thanks to the National Land Survey of Finland, who’s support made this a reality.

      QField’s camera has gained support for customized ratio and resolution of photos, as well as the ability to stamp details – date and time as well as location details – onto captured photos. In fact, QField’s own camera has received so much attention in the last few releases that we have decided to make it the default one. On supported platforms, users can switch to their OS camera by disabling the native camera option found at the bottom of the QField settings’ general tab.

      Wait, there’s more

      There are plenty more improvements packed into this release from project variables editing using a revamped variables editor through to integration of QField documentation help in the search bar and the ability to search cloud project lists. Read the full 3.4 changelog to know more, and enjoy the release!

    • 07 October 2024

    • sur QGIS Blog: Plugin Update – September, 2024

      Publié: 7 October 2024, 6:49pm CEST

      In September a total of 20 new plugins were published in the QGIS plugin repository.

      Highlight

      In the last month some AI-related plugins became available for users, namely IntelliGeo and TreeEyed, which in addition to the increasing number of tools, greatly contribute for the adaptation of QGIS to current and future needs, showcasing it as one of the best options for beginners and experts alike to conduct a number of geospatial analyses.

      As stated by their authors, with IntelliGeo there’s a chat interface where users can detail their requests, and the output is either a PyQGIS code or a graphical processing model, which can in turn be executed directly in QGIS.

      As for the TreeEyed plugin, its main objective is the monitoring of trees by generating vector and raster datasets from high resolution RGB imagery.

      Overview

      Here follows the quick overview in reverse chronological order. If any of the names or short descriptions catches your attention, you can find the direct link to the plugin page in the table below:

      Project Setup
      Sets up a QGIS project to my personal specs.
      Continuous Network Analysis (Processing)
      Processing plugin that adds several scripts to assist in decision making and validation of line-type vector networks by generating inconsistencies, further expanding the “Network Analysis” tool.
      Oslandia
      Official plugin for Oslandia customers.
      Reach
      Enables the use of real transit time as a spatial predicate for selects and joins.
      Data Clock
      Polar plot of seasonal data.
      QGIS Light
      QGIS made simple – a light user interface for core GIS functions.
      Attribute Searcher
      A minimalistic plugin to search for values in attributes quick and easy.
      Topo Maps
      ????????Generate Topographic Maps.
      IntelliGeo
      IntelliGeo is QGIS plugin that facilitates interaction with Large Language Models in QGIS environment.
      CartAGen
      Cartographic generalization.
      RiverBankErosionAndAccretion
      This plugin calculates the erosion and accretion along a river’s course.
      VectorStats
      Plugin for descriptive and statistical analysis of vectors, with chart generation.
      Jilin1Info(2023)
      2023???50cm????????????
      Historique Parcelle
      Historique des parcelles (cadastre français).
      String Writer
      Writes QGIS layers to Surpac string file format.
      TreeEyed
      TreeEyed is a QGIS plugin for tree monitoring using AI.
      SHP Buddy
      Quickly create shapefiles for breeding experiments.
      TEKSI Wastewater
      TEKSI Wastewater plugin to manage wastewater networks.
      KGR Finder
      By simply drawing polygons or clicking on existing polygons, this extension makes it possible to download data from OpenStreetMap (OSM) or the iDAI.gazetteer and display it on the map, including all existing attributes. The plugin is designed so that other services can also be easily integrated in the future.
      layer_style_master
      This QGIS plugin copies symbology, labels, and rendering settings from one layer to multiple other layers.

    • sur Mappery: Hannoverian Bumper Sticker

      Publié: 7 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Marc-Tobias shared this. I like that Hannover becomes the centre of the world.

    • sur Guess Where You Are

      Publié: 7 October 2024, 9:05am CEST par Keir Clarke
      I am currently ranked Number One in the world in the game GuessWhereYouAre. However, I suspect I won't stay on top of the leaderboard for long, especially after other players discover this exciting new Street View game. GuessWhereYouAre is a fun and engaging location-based game that places players in random spots around the world using Street View. Your goal is to explore your surroundings and
    • 06 October 2024

    • sur Free and Open Source GIS Ramblings: LLM-based spatial analysis assistants for QGIS

      Publié: 6 October 2024, 9:25pm CEST

      After the initial ChatGPT hype in 2023 (when we saw the first LLM-backed QGIS plugins, e.g. QChatGPT and QGPT Agent), there has been a notable slump in new development. As far as I can tell, none of the early plugins are actively maintained anymore. They were nice tech demos but with limited utility.

      However, in the last month, I saw two new approaches for combining LLMs with QGIS that I want to share in this post:

      IntelliGeo plugin: generating PyQGIS scripts or graphical models

      At the QGIS User Conference in Bratislava, I had the pleasure to attend the “Large Language Models and GIS” workshop presented by Gustavo Garcia and Zehao Lu from the the University of Twente. There, they presented the IntelliGeo Plugin which enables the automatic generation of PyQGIS scripts and graphical models.

      The workshop was packed. After we installed all dependencies and the plugin, it was exciting to test the graphical model generation capabilities. During the workshop, we used OpenAI’s API but the readme also mentions support for Cohere.

      I was surprised to learn that even simple graphical models are actually pretty large files. This makes it very challenging to generate and/or modify models because they take up a big part of the LLM’s context window. Therefore, I expect that the PyQGIS script generation will be easier to achieve. But, of course, model generation would be even more impressive and useful since models are easier to edit for most users than code.

      Image source: https://github.com/MahdiFarnaghi/intelli_geo ChatGeoAI: chat with PyQGIS

      ChatGeoAI is an approach presented in Mansourian, A.; Oucheikh, R. (2024). ChatGeoAI: Enabling Geospatial Analysis for Public through Natural Language, with Large Language Models. ISPRS Int. J. Geo-Inf., 13, 348.

      It uses a fine-tuned Llama 2 model in combination with spaCy for entity recognition and WorldKG ontology to write PyQGIS code that can perform a variety of different geospatial analysis tasks on OpenStreetMap data.

      The paper is very interesting, describing the LLM fine-tuning, integration with QGIS, and evaluation of the generated code using different metrics. However, as far as I can tell, the tool is not publicly available and, therefore, cannot be tested.

      Image source: [https:]]

      Are you aware of more examples that integrate QGIS with LLMs? Please share them in the comments below. I’d love to hear about them.

    • sur Mappery: Johannes Kepler

      Publié: 6 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      This portrait of Johannes Kepler was spotted by Reinder at the Collegium Maius in Cracow. Don’t you love the way old paintings so often have a globe or a map in the background (presumably a symbol of status)?

    • 05 October 2024

    • sur The Nicknames of America

      Publié: 5 October 2024, 11:26pm CEST par Keir Clarke
      Some U.S. cities have very quirky nicknames. Apparently, the citizens of Auburn, Alabama like to call their town the 'Armpit of the Confederacy'. While their nearby neighbors in Gordo, Alabama call their home the 'Armpit of Civilization'. Elmwood and Belleville in Wisconsin both claim to be the 'UFO Capital of the World' (presumably because of all the strange, alien-looking folk living in

    • sur Mappery: Fire Finding with an Alidade

      Publié: 5 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Have you heard of an alidade? I hadn’t until Walter Schwartz sent me these pics.

      He said “Behold the ingenious alidade, a surveying instrument here used as a fire finder. This one is displayed at the Cole Land Transportation Museum in Bangor, Maine. Forest rangers used these atop fire towers to report the distance and, in conjunction with another tower, the coordinates of fires. The map on this table covers an approximately 25 mile diameter (40 KM) inclusive of Augusta to Rockport Maine. The user viewed through a rectangular slot on one upright and rotated the metal structure to view the fire. Some tables were on slides so that the view would not be obstructed by parts of the tower structure. GPS and cameras solve the same problem today. “

      Well who knew that? I found this great explanation of the alidade.

    • 04 October 2024

    • sur OSGeo Announcements: [OSGeo-Announce] FOSS4G 2022 Firenze (Italy) recordings are online

      Publié: 4 October 2024, 5:49pm CEST

      see news item: FOSS4G 2022 Firenze (Italy) recordings are online - OSGeo

      FOSS4G 2022 has been a great event Firenze (Italy). The videos are now published on Youtube.

      We hope you will enjoy them.

      You find the videos of the talks at our FOSS4G Youtube Channel.

      355 videos were uploaded.

      We hope you like the videos and get valuable information. We would like to spread the world and we hope you will learn about our great software and our community.

      We would like to thank all people involved organizing FOSS4G 2022.

      About OSGeo
      -------------------
      The Open Source Geospatial Foundation (OSGeo) [13] is a non-profit organization dedicated to the development and promotion of open-source geospatial technologies and data. OSGeo serves as an umbrella organization for the collaborative development of open source geospatial software, and provides financial, organizational, and legal support to the broader geospatial community.

      _______________________________________________
      Announce mailing list
      Announce@lists.osgeo.org
      [https:]]

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    • sur Markus Neteler: Migration of grass-dev mailing list to OSGeo Discourse

      Publié: 4 October 2024, 4:35pm CEST

      The post Migration of grass-dev mailing list to OSGeo Discourse appeared first on Markus Neteler Consulting.

    • sur Mappery: Your world at Pied a Terre

      Publié: 4 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reeinder said “At the Amsterdam bookstore Scheltema, one can put a post-it on a kind of world map display, to mark the spot where one has been.”

    • sur Finding Your Coordinate Twins

      Publié: 4 October 2024, 9:39am CEST par Keir Clarke
      Did you know San Francisco shares the same latitude as Fukushima, Japan? Or that Chicago lines up with Rome? These surprising global connections can now be explored with a fun new interactive map that reveals your latitude and longitude twins from across the world!Introducing LatLon Connect - an interactive tool that lets you discover cities around the globe that sit on the same latitude or

    • sur GeoServer Team: GeoServer 2024 Q4 Developer Update

      Publié: 4 October 2024, 2:00am CEST

      The GeoServer team working on sharing our roadmap plans plans and providing greater transparency on our community participation and funding goals.

      GeoServer Developer Forum

      If you have sent email to geoserver-devel list this week you have been met with the following reply:

      This list is now closed, join us on geoserver developer forum: [https:]

      That is right, developer communication has moved to GeoServer Developer on discourse.

      How to help:

      • Accept the invite - it is quick and easy joining the group and navigate to the forum in one go.
      • Update communication details for website and developer guide.

      Discourse Fourm

      GeoServer 3 Crowdfunding

      The consortium of Camptocamp, GeoSolutions and GeoCat have responded to our roadmap challenge with a bold GeoServer 3 Call for Crowdfunding established as a multi-party contract.

      How to help:

      Crowdfunding Form

      Wicket 9 upgrade

      GEOS-11275: Brad and David have made considerable progress on Wicket UI updates. After a year of effort the first results towards Wicket 10 are being merged onto the main branch.

      Thanks to Brad for doing much of the difficult work starting this activity, and to David for working hard to stabilize this work for testing.

      Peter and Jody started a wicket test plan and evaluated an initial 2.26-M0 milestone release.

      How to help:

      • Test a 2.27.x nightly build, clearly noting problems in the Wicket Test Plan.
      • Urgent: Developer assistance is needed to restore JUnit tests for the Wicket modules. Many are failing just due to the contents of the page being slightly altered.
      • Developer assistance is needed to resolve the content-security-policy warnings reported during testing.
      • David has outlined what is needed for a new GSModalDialog to replace the functionality being removed in Wicket 10.
      docker pull docker.osgeo.org/geoserver:2.27.x
docker run -it -p8081:8080 docker.osgeo.org/geoserver:2.27.x
      Spring Security 5.8 update

      GEOS-11271: Andreas Watermeyer (ITS Digital Solutions) has completed this activity ahead of the GeoServer 2.26.0 release.

      How to help:

      Spring Security OAuth2 replacement

      GEOS-11272: Andreas Watermeyer (ITS Digital Solutions) set up new community modules to work on this activity. This is a new implementation as the spring security internals have changed, and the new spring api allows for a cleaner implementation.

      How to help:

      • This work will require extensive testing in different environments.
      • Ideas on unit testing and increasing test coverage with test containers are very welcome.
      Support and sponsorship

      We would like to welcome a new project sponsor:

      Route4Me - Simplify Last Mile Complexity: proven route planning and route optimization software.

      Route4Me

      The GeoServer project steering committee seeks sponsorship to fund maintenance activities, code sprints, and research and development that is beyond the reach of an individual contributor or organization.

      • We have worked with OSGeo to provide sponsorship guidance for individual consultants, small organisation, companies and public institutions of different sizes.
      • GeoServer has a new sponsorship page on our website collecting this information for our project.
      • GeoServer now lists sponsors logos on our home page, alongside core contributors.

      We would like to thank everyone who has responded thus far:

      • Sponsors: How 2 Map, illustreets, and Route4Me.
      • Individual Donations: Peter Rushforth, Marco Lucarelli, Gabriel Roldan, Jody Garnett, Manuel Timita, Andrea Aime
    • 03 October 2024

    • sur Mappery: 3D Globe

      Publié: 3 October 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Elizabeth shared this with us. She said “Would you call this a map? It is certainly a navigation aid.” I am not sure how you would describe this but it certainly is an interesting piece.

    • sur Mapping Every US Election Since 1840

      Publié: 3 October 2024, 10:45am CEST par Keir Clarke
      The Republican Party has won the popular vote in only one Presidential Election in the last 35 years. Since 1989 only George W. Bush (in 2004) has won the popular vote for the Republicans - and in that election Bush benefited from being the incumbent.A newly released visualization from the University of Richmond’s Digital Scholarship Lab highlights the dwindling appeal of the Republican Party

    • sur Mapping the Political Landscape

      Publié: 2 October 2024, 10:00am CEST par Keir Clarke
      Waves of Interest is a deep dive into Google search trends during election years. This beautiful data visualization maps out which political topics capture the attention of Americans during US election years. And where!By using the clever visual metaphor of a topographic map Waves of Interest transforms political interest into an intuitive landscape. The visualization reveals the fall

    • sur Tracking Satellites in 3D

      Publié: 1 October 2024, 9:51am CEST par Keir Clarke
      searching & zooming in on individual satellitesExploring the Final Frontier with Keep TrackKeepTrack is an innovative platform that allows users to monitor satellites orbiting Earth in real-time. At its core is a 3D interactive map that not only shows you where satellites are at the moment but also provides advanced analytics and visualizations to study their orbits and interactions in

    • sur The U.S. Supermarket Wars

      Publié: 30 September 2024, 10:30am CEST par Keir Clarke
      According to the Washington Post, "Walmart, Kroger, Aldi (Süd) and Albertsons own a third of all U.S. grocery stores locations." But who is winning the supermarket wars in your area?Hot on the heels of Japan's ConbiniWars interactive map, the Post has divided the United States based on which supermarket chain owns the most stores in each county. Whereas the ConbiniWars map used a Voronoi layer

    • sur Paul Ramsey: Cancer 12

      Publié: 30 September 2024, 2:00am CEST

      Back to entry 1

      I was glancing at the New York Times and saw that Catherine, the Princess of Wales, had released an update on her treatment. And I thought, “wow, I hope she’s doing well”. And then I thought, “wow, I bet she gets a lot of positive affirmation and support from all kinds of people”.

      I mean, she’s a princess.

      Priness Katherine

      Even us non-princesses, we need support too, and I have to say that I have been blown away by how kind the people around me in my life have been. And also how kind the other folks who I have never really talked with before have been.

      I try to thank my wife as often as I can. It is hard not to feel like a burden when I am, objectively, a burden, no matter how much she avers I am not. I am still not fully well (for reasons), and I really want to be the person she married, a helpful full partner. It is frustrating to still be taking more than I’m giving.

      From writing about my experience here, I have heard from other cancer survivors, and other folks who have travelled the particular path of colorectal cancer treatment. Some of them I knew from meetings and events, some from their own footprint on the internet, some of them were new to me. But they were all kind and supportive and it really helped, in the dark and down times.

      From my work on the University of Victoria Board of Governors, I have come to know a lot of people in the community there, and they were so kind to me when I shared my diagnosis. My fellow board members stepped in and took on the tasks I have not been able to do the past few months, and the members of the executive and their teams were so generous in sending their well-wishes.

      And finally, my employers at Crunchy Data were the best. Like above and beyond. When I told them the news they just said “take as much time as you need and get better”. And they held to that. My family doctor asked “do you need me to write you a letter for your employer” and I said “no, they’re good”, and he said, “wow! don’t see that very often”. You don’t. I’m so glad Crunchy Data is still small enough that it can be run ethically by ethical people. Not having to worry about employment on top of all the other worries that a cancer diagnosis brings, that was a huge gift, and not one I will soon forget.

      I think people (and Canadians to a fault, but probably people in general) worry about imposing, that communicating their good thoughts and prayers could be just another thing for the cancer patient to deal with, and my personal experience was: no, it wasn’t. Saying “thanks, I appreciate it” takes almost no energy, and the boost of hearing from someone is real. I think as long as the patient doesn’t sweat it, as long as they recognize that “ackknowledged! thanks!” is a sufficient response, it’s all great.

      Fortunately, I am not a princess, so the volume was not insuperable. Anyways, thank you to everyone who reached out over the past 6 months, and also to all those who just read and nodded, and maybe shared with a friend, maybe got someone to take a trip to the gastroenterologist for a colonoscopy.

      Talk to you all again soon, inshala.

      Mountain

    • 29 September 2024

    • sur Mappery: Sanssouci Park

      Publié: 29 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reinder said “These images show a 3D plan in bronze or something, from the park ‘Sanssouci’ in Potsdam. A beautiful place with an unrivaled amount of quite impressive palaces.  [https:]] “

    • sur Mappery: Globe 1639 at Magic Mushroom

      Publié: 29 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]
      Screenshot

      Reinder spotted this on Spuistraat, Amsterdam.

      “Now it is a branch of Magic Mushroom – but in 1639 a globe was bricked into the facade.”

      I had to check that Magic Mushroom was what I thought it was, and it was! No endorsement but I guess your maps get super wild afgter a trip to this place.

    • 28 September 2024

    • sur QGIS Blog: Catching up with the QGIS User Conference 2024 & Save the Date for 2025

      Publié: 28 September 2024, 7:26pm CEST

      This year’s user conference took place in Bratislava, organized by the Slovak QGIS User Group and hosted at the Slovak University of Technology Faculty of Civil Engineering. The event was sold out early and the venue was full of energy and excitement.

      If you missed the conference or couldn’t make it to a talk due to too many great overlapping sessions, you now have the opportunity to catch up with everything on the UC 2024 playing list:

      Thanks to the organizers, speakers, sponsors, and all participants for the wonderful event.

      If you want to read some personal reports from community members, here’s Ujaval Gandhi’s report: [https:]] ; and here’s Hans van der Kwast’s: [https:]]

      Last but not least, we want you to save the date for next year’s user conference:

      The QGIS User Conference will be in Norrköping, Sweden from 2-3 June 2025, and contributor meeting there after 4-7.

    • sur Markus Neteler: GRASS GIS PSC Elections 2024: nomination period ongoing

      Publié: 28 September 2024, 3:41pm CEST

      The post GRASS GIS PSC Elections 2024: nomination period ongoing appeared first on Markus Neteler Consulting.

    • sur Mappery: Tire-Lire bookshop

      Publié: 28 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      A bookshop in Toulouse, France, displaying a vintage school map

    • sur The Geotastic Daily Challenge

      Publié: 28 September 2024, 10:28am CEST par Keir Clarke
      Can you beat me on today's Geotastic Daily Challenge? I am currently 89th in the Geotastic Daily Challenge with a combined score of 24,263. Do you think you have what it takes to claim a higher spot on the leaderboard than the mighty 'gmap'?Geotastic is yet another online geography game that challenges players to identify locations around the world using Google's Street View imagery. Every day
    • 27 September 2024

    • sur OTB Team: OTB Release 9.1.0

      Publié: 27 September 2024, 8:52pm CEST
      Dear OTB community, We are happy to announce that OTB version 9.1.0 has been released! Ready to use binary packages are available on the package page of the website: The Docker image is available :docker pull orfeotoolbox/otb:9.1.0 For those who want to use docker with python 3.10 or 3.12, you can respectively pull images 9.1.0_ubuntu22 […]

    • sur Cryptic Crossword Map

      Publié: 27 September 2024, 11:49am CEST par Keir Clarke
      Cryptic World is a new unique map game that fuses the thrill of a geography quiz with the brain-teasing fun of a cryptic crossword! Play Cryptic World and discover how much of the world you can unlock!Click on the question mark pins scattered across the Cryptic World map and solve the uncovered cryptic clues. Every time you correctly answer a clue you will reveal the name of a hidden location.&

    • sur Mappery: Place Mat

      Publié: 27 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      This is clever. Reinder shared this place mat from the restaurant ‘Oortjeshekken’, in the Ooijpolder, near Nijmegen. Yes it is a place mat for your plate and cutlery in the restaurant and it is also a place map for the surrounding area.

    • sur OSGeo Announcements: About the Announce category

      Publié: 27 September 2024, 4:24am CEST

      Mirror of OSGeo Announce mailing list.

      1 post - 1 participant

      Read full topic

    • 26 September 2024

    • sur Even Rouault: Those concepts in the geospatial field that have cost us millions of $$$

      Publié: 26 September 2024, 10:52pm CEST

      Every domain has its baggage of concepts, which at first sight don't appear to be that terrible, but which are in practice.

      Let's start with a non-geospatial example. A lot of programming languages have the concept of a "null" pointer. It is available in the C and C++ programming languages in particular, but in Java as well, or Python, etc.. Tony Hoare, null's creator, regrets its invention: "I call it my billion-dollar mistake." While very useful in some contexts, that feature also happens to cause a lot of bugs, with severe criticity in some cases. The Rust language has for example (almost) removed the null pointer concept and replace it with optional references, where the compiler enforces that the code explictly checks for the validity of the reference before using it. At the minute, I'm writing this, I'm debating about that very issue with a colleague.

      The geospatial field is not free of concepts that are a never-ending source of troubles, and I will come with my own list, with my perspective of software developer.

      - Geometry model. Point, lines, polygons. What could be most simple than that? Well, the commonly-used OGC Simple Features model allows those objects to be empty. How is that useful in practice? Hard to tell: NULL geometries are (somewhat paradoxically given the above paragraphy) actually a better replacement. My own perception of that "feature" is that it is mostly a huge headache that goes into your way when trying to write robust code. One evidence of that is that the same standard that invented it neglected to specify how to export an empty point in the Well Known Binary representation. Over the years, the tradition has become to use the Not-A-Number value for the X and Y value of an empty point. Which by itself may cause interesting consequences for applications that would neglect to make a special case. A Not-A-Number is ... well ... not a number, and for example it is not equal to itself ... (and in the IEEE-754 representation, there are litteraly billions of different binary potential encodings of a NotANumber). Everything you learnt at school in your math courses will break with it (this is actually quite general when crunching numbers with computers. Finite precision break a lot of the expected properties of ideal numbers). An empty line has the undesirable property of not having a start or end point: any algorithm must be ready for that. Another annoyance is that there is not just one "geometry empty" object, but a "point empty", a "line empty", a "polygon empty", etc. What is the expected intersection of an empty line with an empty polygon ? An empty line, an empty polygon, an empty point, ... ? The developers of the GEOS library or the PostGIS spatial extension have unfortunately to regularly debate at length about those topics. One can but think there would be a better use of their expertise and time than having to deal with such esoteric subjects (I didn't ask them, so they may actually be thrilled by them. You never know...)

      - Coordinate reference system (CRS) axis order.  CRS, such as WGS 84 geographic, or UTM 31N / ETRS89 have several axis. For geographic CRS, this will be the longitude, the latitude, and optionally the ellipsoidal height. When expressing coordinates in a CRS, one must decide in which order they are specified. They are lengthy debates whether this should be longitude first, latitude second, or the reverse. The ISO 19111 / OGC Abstract Topic 2 specification or geodetic registries have decided to not take a firm stance on that, and have allowed authorities responsible for CRS definition and maintenance, to submit CRS definitions with the axis order they wish. Excellent! Well no. The issue is that while non-geomaticians user may chose to express a coordinate in prose like "50 degree of latitude north, 15 degree of longitude east", or "15 degree of longitude east, 50 degree of latitude north", that doesn't mean it is a good idea that the software systems reflect that liberty of speech. Some GIS formats have no way of clearly expressing the CRS, or if they have, they might use an incomplete way of specifying it, in particular lacking the way to express the axis order. The usual practice is to generally specify the longitude as the first value (as corresponding to the X/horizontal axis of a Cartesian plan) and latitude next (Y/vertical axis), refleting the natural mapping to make a graphical representation. Other formats (GML in particular) require that the coordinates are expressed in the order of the CRS definition, which require access to a database to get the axis order, given that in GML vector files, the CRS is only referenced through a code, and not defined inline. Depending on whether the persons responsible to design the protocol/file format, the order may be the "GIS friendly one" (longitude-latitude), or the "CRS pedantic one" (latitude-longitude for example for geographic CRS defined by the EPSG geodetic registry). This is an eternal source of confusion. Sometimes with absurd situations. The OGC GeoPackage file format captures a full definition of the CRS used in the vector tables it contains, including in particular the official axis order, but to reflect the long-GIS tradition, as an amendment, specify that the encoding of coordinates in its (extension of) the WKB format mentionned in the previous paragraph should be longitude-latitude (for geographic CRS) or easting-northing (for projected CRS). I will not blame anyone particular for this. This is an "overall system error". In the ideal situation, a courageous geomatician in a standard organization or in a geodetic registry should have said "here, we are geomaticians: geographic CRS are always longitude-latitude, and projected CRS are always easting-northing.  It is your responsibility as users of our system to provide data always in that order".  Failing to have access to a time-travel machine to warn in advance my glorious predecessors about the incoming catastrophe, the only solution I see to solve the issue it is to ask all population to relocate on the line of longitude=latitude, and exclude any mapping outside of it.

      - Raster cell registration issues, a.k.a pixel-centre versus pixel-corner, or pixel-is-point versus pixel-is-area, a.k.a the half-pixel shift error. A raster cell is both an entity you reference with a (column, line) integer pair, so perceived as a discrete point, but when displayed, it actually occupies a non-zero area on your display device. When that raster cell is registered against geospatial coordinates, one debate is: "what exact place in that cell does this (longitude, latitude) or (easting, northing) refer to? Is that the center of the pixel, or maybe its top-left corner?" . Obviously, whenever there is a choice, file format and service specifications never agree together. The GDAL software has courgeously decided to "standardize" its internal model to the convention where that the georeferenced coordinate associated to a pixel qualifies the location of the top-left corner. GDAL format drivers do the necessary dance of applying and de-applying a half-pixel shift to go into that convention ... when they have access to the convention of the underlying format.

      A temptative conclusion could be that any proposed standard or specification should go to the step of having an actual real-world implementation of it, not just a "working prototype" ("toy implementation" more casually), to check whether some apparently minor details are not a major source of inconvenience.

    • sur GeoTools Team: GeoTools 32.0 released

      Publié: 26 September 2024, 10:33pm CEST
      GeoTools 32.0 released The GeoTools team is pleased to announce the release of the latest stable version of GeoTools 32.0: geotools-32.0-bin.zip geotools-32.0-doc.zip geotools-32.0-userguide.zip geotools-32.0-project.zip This release is also available from the OSGeo Maven Repository and is made in conjunction with GeoServer 2.26.0 and GeoWebCache 1.26.0

    • sur Fernando Quadro: Como ganhar dinheiro com o código aberto?

      Publié: 26 September 2024, 2:00pm CEST

      De tempos em tempos as pessoas costumam me fazer essa pergunta. A resposta curta é que ser código aberto não significa que tudo é de graça – você geralmente precisa de especialistas na área para ajudá-lo.

      Por exemplo, GeoServer, QGIS e PostGIS você pode baixá-los, instalá-los e usá-los de graça. Claro. Mas sua empresa provavelmente ainda precisará pagar por:

      ? Qualquer nova funcionalidade que você queira implementar no software principal, especialmente se for bem específica ou de nicho para apenas uma pequena parte da base de usuários
      ? Consertar um bug crítico no código que afeta seu fluxo de trabalho de forma rápida (especialmente se afetar apenas uma parte muito pequena da base de usuários)
      ? Criar uma extensão/módulo/plugin que simplificaria algumas das tarefas específicas para sua organização
      ? Obter SLA (Acordo de Nível de Serviço), para que suas dúvidas/problemas com o software possam ser discutidos/resolvidos com prioridade e não bloqueiem seu trabalho
      ? Treinar sua equipe com os principais especialistas da área
      ? Migrar de soluções proprietárias para o ecossistema de código aberto, já que é preciso muito conhecimento para unir todos os componentes de código aberto para que funcionem bem

      O bom do código aberto é que se empresas ou usuários apoiam financeiramente o projeto, todas as novas funcionalidades, correções e melhorias (como documentação) chegam a todos.

      Então, se sua empresa quer ajudar um projeto de código aberto a crescer, uma ótima ideia é patrociná-lo. E se você estiver procurando por um desenvolvimento personalizado de WebGIS, treinamento, migração ou suporte em torno disso, você pode entrar em contato com a Geocursos. É isso que fazemos desde 2012 ?

    • sur Mappery: Wine map in a Tapas bar

      Publié: 26 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      I found this map of Spain showing the various wines per region in a tapas bar in Toulouse, France

    • sur VersaTiles Free Map Tiles

      Publié: 26 September 2024, 10:17am CEST par Keir Clarke
      Looking for a free, flexible way to create custom maps? You’re in luck! Having only recently discovered one free source of interactive map tiles in OpenFreeMap, I have now uncovered VersaTiles. VersaTiles provides a full open-source toolkit for creating and sharing map tiles, all powered by OpenStreetMap data - and with no corporate strings attached!VersaTiles map tiles can be used in most

    • sur PostGIS Development: PostGIS 3.5.0

      Publié: 26 September 2024, 2:00am CEST

      The PostGIS Team is pleased to release PostGIS 3.5.0! Best Served with PostgreSQL 17 RC1 and GEOS 3.13.0.

      This version requires PostgreSQL 12 - 17, GEOS 3.8 or higher, and Proj 6.1+. To take advantage of all features, GEOS 3.12+ is needed. SFCGAL 1.4+ is needed to enable postgis_sfcgal support. To take advantage of all SFCGAL features, SFCGAL 1.5 is needed.

      3.5.0

      This release is a feature release that includes bug fixes since PostGIS 3.4.3, new features, and a few breaking changes.

    • 25 September 2024

    • sur Fernando Quadro: 4 dicas para melhorar sua aplicação GIS Mobile

      Publié: 25 September 2024, 2:00pm CEST

      A demanda por soluções geoespaciais acessíveis e em movimento está maior do que nunca. Como uma empresa de desenvolvimento de software que atende ao setor de GIS, você precisa entender a importância de fornecer aplicativos amigáveis ??para dispositivos móveis que atendam às necessidades de seus clientes.

      Você precisa criar soluções inovadoras e amigáveis ??que capacitem os profissionais a acessar e utilizar dados espaciais a qualquer hora, em qualquer lugar.

      ? Alguns recursos principais de seus aplicativos GIS móveis devem incluir:

      ?Recursos offline: Projete seus aplicativos para funcionar perfeitamente, mesmo em áreas com conectividade limitada à Internet, garantindo acesso ininterrupto a dados geoespaciais críticos.

      ?Coleta de dados em tempo real: Os usuários devem ser capazes de capturar e atualizar informações espaciais em movimento, agilizando as operações de campo e melhorando a precisão dos dados.

      ?Interfaces intuitivas: Priorize interfaces de usuário intuitivas e responsivas, facilitando a navegação e a interação dos profissionais com dados geoespaciais em seus dispositivos móveis.

      ?Integração perfeita: Você deve ser capaz de integrar aplicativos GIS móveis com plataformas GIS existentes de desktop e baseadas em nuvem, garantindo um fluxo de trabalho coeso e eficiente.

      Ao aproveitar o poder da tecnologia móvel, seus clientes podem aumentar sua produtividade, tomar decisões mais bem informadas e fornecer serviços superiores aos seus usuários finais.

      Fonte: webgis.tech
      Instagram: [https:]]
      LinkedIn: [https:]]

    • sur OpenFreeMap Map Styles

      Publié: 25 September 2024, 12:16pm CEST par Keir Clarke
      One very important feature I overlooked in the launch of OpenFreeMap is the ability to customize the styles of OpenFreeMap map-tile sets using the Maputnik open-source visual editor for the MapLibre Style Specification. If you have ever wanted to make your maps stand out, reflect your brand, or just look completely unique you can now do that for free by editing OpenFreeMap map tile styles

    • sur Mappery: Atlas in Potsdam

      Publié: 25 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reinder sent this pic of Atlas holding up the world from the roof of the Alte Rathaus at the Alte Markt, Potsdam, Germany (he wasn’t actually on the roof but you know what I mean)

    • 24 September 2024

    • sur Fernando Quadro: Como ser tornar um Desenvolvedor WebGIS?

      Publié: 24 September 2024, 2:00pm CEST

      Se você já se perguntou como se tornar um especialista em desenvolvimento WebGIS, este roteiro o guiará passo a passo pelas ferramentas e habilidades essenciais:

      ? Fundamentos do WebGIS: Aprenda a arquitetura e os termos chave.

      ? Desenvolvimento do lado do cliente (front-end): domine JavaScript, HTML/CSS e estruturas de UI (User Interface) como Bootstrap, por exemplo.

      ? Bibliotecas WebGIS: use o poderoso OpenLayers, Leaflet, Turf.js e muito mais e crie seu projeto.

      ? Domínio do lado do servidor (back-end): Aprenda Python, PostGIS, Django, GeoServer e obtenha a experiência que faz com que as empresas de GIS precisem de você.

      ? Crescimento na carreira: procure oportunidades para desenvolvedor WebGIS no mercado, mas enquanto ela não aparece, você pode começar como freelancer ou criar seu próprio WebGIS para ir adquirindo experiência!

      E ai, o que você está esperando?

      Fonte: webgis.tech
      Instagram: [https:]]
      LinkedIn: [https:]]

    • sur Mappery: Afghan Carpet

      Publié: 24 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Raymond pointed out that the Afghani restaurant we featured a few weeks ago also had this carpet map on the wall and this one is slightly different to this carpet map

    • sur GRASS GIS: Growing GRASS GIS with NSF Support: Progress and Next Steps

      Publié: 24 September 2024, 10:12am CEST
      In 2023, our team of researchers from four U.S. universities announced a two-year project with support from an NSF grant (award 2303651). This project aims to modernize and expand the GRASS GIS platform, strengthen its role as a key geospatial processing engine, and build a diverse, vibrant global community of users and developers. We are excited to share the progress we have made so far toward these goals in the first half of the project.

    • sur Konbini Wars

      Publié: 24 September 2024, 10:09am CEST par Keir Clarke
      Imagine being able to walk down any street and being only minutes away from your next snack, a freshly brewed coffee, or even a place to pay your bills. This is the magic of konbini - Japan's beloved convenience stores that have become an integral part of Japanese daily life. In Japan, you don’t have to travel very far before encountering a konbini convenience store. These compact stores are

    • sur From GIS to Remote Sensing: Random Forest Classification of Sentinel-2 image in Python using Remotior Sensus

      Publié: 24 September 2024, 8:00am CEST
      This video tutorial illustrates how to perform Random Forest classification of a Copernicus Sentinel-2 image using Remotior Sensus, a Python package that allows for the processing of remote sensing images and GIS data.The tutorial is available as Jupyter notebook in Google Colab, a free service by Google that allows for executing a Jupyter notebook in the cloud. Following the video of this tutorial.
      Read more »

    • sur Paul Ramsey: Cancer 11

      Publié: 24 September 2024, 2:00am CEST

      Back to entry 1

      What happened there, I didn’t write for three months! Two words: “complications”, and “recovery”.

      In a terrifying medical specialty like cancer treatment, one of the painful ironies is that patients spend a lot of time recovering from complications and side effects of the treatments, rather than the cancer. In my case and many others, the existence of the cancer isn’t even noticable without fancy diagnostic machines. The treatments on the other hand… those are very noticable!

      cdiff

      A lot of this comes with the territory of major surgery and dangerous chemicals. My surgery included specific possible complications including, but not limited to: incontinence, sexual disfunction, urinary disfunction, and sepsis.

      Fortunately, I avoided all the complications specific to my surgery. What I did not avoid was a surprisingly common complication of spending some time in a hospital while taking broad spectrum antibiotics–I contracted the “superbug” clostridioides difficile, aka c.diff.

      Let me tell you, finding you have a “superbug” is a real bummer, and c.diff lives up to its reputation. Like cancer, it is hard to kill, it does quite a bit of damage while it’s in you, and the things that kill it also do a lot of damage to your body.

      cdiff

      Killing my c.diff required a couple of courses of specialized antibiotics (vancomycin), that in addition to killing the c.diff also killed all the other beneficial bacteria in my lower intestine.

      So, two months after surgery, I was recovering from:

      • having my lower intestine handled and sliced in a major surgery
      • having that same intestine populated with c.diff and covered in c.diff toxins
      • having the microbiotic population living in my intestine nuked with a modern antibiotic developed to kill resistant superbugs

      Not surprisingly, having all those things at once makes for a much longer recovery, and a pretty up-and-down one. My slowly recovering microbiota is in constant flux, which results in some really surprising symptoms.

      • highly variable stomach discomfort (ok)
      • highly variable appetite (makes sense)
      • random days of fatigue (really?)
      • random days of anxiety (what?!?)

      I had not really understood the implications of gut/brain connection, until this journey showed me just how tightly bound my mental state was to the current condition of my guts. The anxiety I have experienced as a result of my c.diff exposure has been worse, amazingly, than what I felt after my initial cancer diagnosis. One was in my head, but the other was in my gut.

      cdiff

      I have also developed a much more acute sympathy for people suffering from long Covid and other chronic diseases. The actual symptoms are bad enough, but the psychological effect of the symptom variability is really hard to deal with. Bad days follow good days, with no warning. I have mostly stopped voicing any optimism about my condition, because who knows what tomorrow will bring.

      When people ask me how I’m doing, I shrug.

      One thing I have got going for me, that chronic disease sufferers do not, is a sense that I am in fact improving. I started journaling my symptoms early in the recovery process, and I can look back and see definitively that while things are unpredictable day to day, or even week to week, the long term trajectory is one of improvement.

      Without that, I think I’d go loopy.

      Anyways, I am now rougly three months out from my last course of antibiotics, and I expect it will be at least another three months before I’m firing on all cylinders again, thanks mostly to the surgical complication of acquiring c.diff. If I was just recovering from the surgery, I imagine I would be much closer to full recovery.

      Harvesting apples

    • sur GeoServer Team: Using Spatial Operators in GeoServer Filters

      Publié: 24 September 2024, 2:00am CEST

      GeoSpatial Techno is a startup focused on geospatial information that is providing e-learning courses to enhance the knowledge of geospatial information users, students, and other startups. The main approach of this startup is providing quality, valid specialized training in the field of geospatial information.

      ( YouTube | LinkedIn | Facebook | X )

      Spatial Operators in GeoServer Filters

      In this session, we want to talk about the Spatial operators in GeoServer in detail. If you want to access the complete tutorial, click on the link.

      Introduction

      GeoServer supports various spatial operators that filter geospatial data based on their location or spatial relationships with other features. These operators are commonly used with other filter expressions to create complex queries. These queries are useful for extracting specific subsets of data from a larger dataset.

      The spatial operators are Topological, Distance, and Bounding Box operators. We’ll explain them in more detail below.

      Note. This video was recorded on GeoServer 2.22.4, which is not the most up-to-date version. Currently, versions 2.24.x and 2.25.x are supported. To ensure you have the latest release, please visit this link and avoid using older versions of GeoServer.

      Topological operators

      In GeoServer, topological operators are used for spatial analysis and processing of geographic data. These operators perform geometric operations that preserve the spatial relationship or topology between geometric features. Some common topological operators in GeoServer include: Intersects, Within, Contains, etc.

      Intersects

      The Intersects filter in GeoServer is used to query spatial data based on the intersection of two geometry objects. For example, you can use this operator to extract all features that intersect with a specified Point, Line, or Polygon.

      Here are some examples of how you can use this filter in an XML request to filter the States layer by the State_Name attribute:

      • Navigate to the Demos page, then select Demo requests.
      • From the Request section, select the WFS_getFeatureIntersects1.0.xml request.
      • The address will be filled in automatically, in the URL section.
      • Now, we will explain some elements:
        • The first thirteen lines include explanations in the form of comments.
        • Line 14 describes the XML version and the getFeatureIntersects operation of the WFS service being used.
        • Line 15 specifies the default output format for the WFS service as GML2. Additionally, GeoServer supports several other commonly used formats such as “gml3, shapefile, geojson, and csv.”
        • Lines 16 to 22 define the start of the XML request and declare the namespaces used in the request.
        • Line 23 specifies the type name of the feature to be queried. In this case, it requests features of the topp:states.
        • Lines 25 to 30 define the filter criteria for the query. On these lines, we use the Intersects filter, to retrieve all states that intersects with a Point defined by latitude and longitude.
      • Press the Submit button.

      Note. For GeoServer 2.25.2 the Demo Request page has been improved to show response Headers, and provide the option to pretty print XML output.

      Within

      This operator is used to retrieve features that are completely within the specified geometry. For example, you can use this operator to extract all features that are within a polygon.

      Here’s an example of how you can define a Within filter in XML. As an example of using this filter in a WFS getFeature request, use the following block codes to replace lines 24 to 31:

      <Filter>
  <Within>
    <PropertyName>the_geom</PropertyName>
    <gml:Polygon xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
	  <gml:outerBoundaryIs>
	    <gml:LinearRing>
		  <gml:coordinates>-90.73,29.85 -90.73,35.92 -80.76,35.92 -80.76,29.85 -90.73,29.85</gml:coordinates>
		</gml:LinearRing>
	  </gml:outerBoundaryIs>
    </gml:Polygon>
  </Within>
</Filter>

      Press the Submit button. As you can see, the result includes two states named Alabama and Georgia.

      Contains

      This operator is used to filter data that is completely contained within a given geometry. For example, you can use this operator to extract all features that are completely contained within a polygon that represents a state boundary.

      Here’s an example of how you can define a Contains operator in XML:

      <Filter>
  <Contains>
    <PropertyName>the_geom</PropertyName>
    <gml:LineString srsName="EPSG:4326">
       <gml:coordinates>-89.35,31.46 -89.35,32.11 -89.49,32.23 -90.21,32.23</gml:coordinates>
    </gml:LineString>
  </Contains>
</Filter>

      Press the Submit button. As you can see, the state that contains the given geometry is Mississippi.

      You will need to adjust the filter and shape to match your data and SRS. Assuming you have a data source with a geometry column named the_geom that uses the EPSG:4326 coordinate system.

      Distance operators

      In GeoServer, Distance operators like “DWithin” and “Beyond” filters, are used to filter and retrieve features based on their spatial relationship and proximity to a given geometry or location. These operators can be used in WFS requests and are useful for performing spatial analysis and finding nearby features.

      DWithin

      The ‘DWithin’ or ‘Distance Within’ filter, will return records that are located within a specific distance of a defined point, much like a buffer. As well as the point geometry, you must specify the value of the distance from this point and the unit of measure. The units for the DWithin are: Feet, meters, kilometers and miles.

      Here’s an example of how to use the DWithin filter in a GeoServer XML configuration file. To find all the features that are within 10000 meters of a given point in a layer called “sf:archsites”, the following WFS request can be used.

      <wfs:GetFeature service="WFS" version="1.0.0"
            outputFormat="application/json" xmlns:wfs="http://www.opengis.net/wfs"
            xmlns:ogc="http://www.opengis.net/ogc"
            xmlns:gml="http://www.opengis.net/gml"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://www.opengis.net/wfs [schemas.opengis.net]   <wfs:Query typeName="sf:archsites">
    <ogc:Filter>
	  <ogc:DWithin>
		<ogc:PropertyName>the_geom</ogc:PropertyName>
		  <gml:Point srsName="http://www.opengis.net/gml/srs/epsg.xml#26713">
			<gml:coordinates>593250,4923867</gml:coordinates>
		  </gml:Point>
		<ogc:Distance units="meter">10000</ogc:Distance>
	  </ogc:DWithin>
	</ogc:Filter>
  </wfs:Query>
</wfs:GetFeature>

      This will return all the features in “sf:archsites” layer, that are within 10000 meters of the given point. Remember that, the EPSG code mentioned in line 11 is very important because it serves as a reference point for importing coordinates and distance values.

      Press the Submit button.

      Bounding Box operators

      The Bounding Box operator is used to filter data based on a specified bounding box. A bounding box is a rectangular region defined by its lower left and upper right coordinates: minx, miny, maxx, and maxy. For example, you can use this operator to extract all features that are located or partially located inside a box of coordinates.

      As an example of using this operator, select the WFS_getFeatureBBOX1.0.xml from the Request section. Now the filters block code is as follows:

      <Filter>
  <BBOX>
    <PropertyName>the_geom</PropertyName>
    <gml:Box srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
       <gml:coordinates>-75.102613,40.212597 -72.361859,41.512517</gml:coordinates>
    </gml:Box>
  </BBOX>
</Filter>

      In this case, we just get the STATE_NAME and PERSONS attribute. Using the range specified in the code specifies the features that are completely or partially located in this area. The result includes four states named New York, Pennsylvania, Connecticut, and New Jersey as you see on the screen.

      In this session, we took a brief journey through the “Spatial operators in GeoServer”. If you want to access the complete tutorial, click on the link.

    • 23 September 2024

    • sur The 2024 GeoGuessr World Cup

      Publié: 23 September 2024, 11:41am CEST par Keir Clarke
       Do you think you’ve got what it takes to be the next GeoGuessr World Champion?This year's GeoGuessr World Cup was won by Blinky, who defeated the U.S.'s mk, to become the 2024 GeoGuessr World Champion. The dramatic final was a tense affair. Blinky took an early 2-0 lead, but mk made a stunning comeback winning the next two games, to take the competition into the fifth and final game.

    • sur Mappery: Jo Spier

      Publié: 23 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      A cartographic book cover by Jo Spier (1900-1978) spotted by Reinder – exquisite.

    • 22 September 2024

    • sur Mappery: Oh, Toulouse!

      Publié: 22 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Exploring the heart of Toulouse, France, a city steeped in history and culture. This tiny map highlights some of the must-see spots in the city center:

      • Capitole: The grand city hall and opera house.
      • Place du Capitole: A bustling square with cafes, shops, and street performers.
      • Saint-Sernin Basilica: A UNESCO World Heritage Site known for its Romanesque architecture and impressive cloister.
    • 21 September 2024

    • sur Free and Open Source GIS Ramblings: Trajectools tutorial: trajectory preprocessing

      Publié: 21 September 2024, 4:34pm CEST

      Today marks the release of Trajectools 2.3 which brings a new set of algorithms, including trajectory generalizing, cleaning, and smoothing.

      To give you a quick impression of what some of these algorithms would be useful for, this post introduces a trajectory preprocessing workflow that is quite general-purpose and can be adapted to many different datasets.

      We start out with the Geolife sample dataset which you can find in the Trajectools plugin directory’s sample_data subdirectory. This small dataset includes 5908 points forming 5 trajectories, based on the trajectory_id field:

      We first split our trajectories by observation gaps to ensure that there are no large gaps in our trajectories. Let’s make at cut at 15 minutes:

      This splits the original 5 trajectories into 11 trajectories:

      When we zoom, for example, to the two trajectories in the north western corner, we can see that the trajectories are pretty noisy and there’s even a spike / outlier at the western end:

      If we label the points with the corresponding speeds, we can see how unrealistic they are: over 300 km/h!

      Let’s remove outliers over 50 km/h:

      Better but not perfect:

      Let’s smooth the trajectories to get rid of more of the jittering.

      (You’ll need to pip/mamba install the optional stonesoup library to get access to this algorithm.)

      Depending on the noise values we chose, we get more or less smoothing:

      Let’s zoom out to see the whole trajectory again:

      Feel free to pan around and check how our preprocessing affected the other trajectories, for example:

    • sur Mappery: Eugeniusz Romer

      Publié: 21 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      This came from Reinder

      Portrait of Eugeniusz Romer
      It hangs above the desk of the director of the Institute of Geography and Regional Development at the University of Wroclaw. It shows the eminent geographer and cartographer depicted against the background of a planiglobium map.

      Romer, (1871-1954) was the founder of modern Polish cartography and co-founder of the Ksiaznica-Atlas publishing house in Lwow, one of the most important Polish publishing houses in the interwar period. It was a house publishing textbooks and teaching aids for teachers and students, cartographic publications, children’s and young adult literature, and encyclopaedias. After the Second World War, the publishing house resumed its activities in Wroctaw, where many atlases of Poland and the world were published under Romer’s editorship.

    • sur Urban Planning in 3D

      Publié: 21 September 2024, 10:44am CEST par Keir Clarke
      The Studio Carto is a French design company dedicated to creating innovative experiences in the visualization of architectural, urban, and territorial projects. The company uses interactive maps to explore the challenges involved in transforming environments.The Studio Carto - Urban Project is a beautifully realized interactive presentation of the planned redevelopment of the Bois du Château
    • 20 September 2024

    • sur Free Maps for All

      Publié: 20 September 2024, 11:21am CEST par Keir Clarke
      All my recent personal map projects (Backdrop, World Level Zero, Guess This City) are available for free online. However, because I make zero money from my maps, I cannot afford to host them myself or pay a provider for the map tiles that they use. This means I have to be a little creative in publishing my maps online.Thanks to the amazing Glitch and the generosity of TripGeo I am able to host

    • sur Mappery: Seated on the Helsinki Tram Network

      Publié: 20 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Maarten Pullen sent me this. “Helsinki has a fair number of tram lines in its city center. A great way of doing sightseeing when you’re tired of walking. The seats in the tram also have a network map.”

    • sur Nick Bearman: New Website - Quarto

      Publié: 20 September 2024, 1:00am CEST

      I’ve been thinking for a bit of time that I need to redo my website as some of the pages had evolved a bit, and were getting a bit too long. What you see now is what I have come up with:

      I also took the opportunity to ‘rebrand’ myself. Previously I’d used the name Geospatial Training Solutions to market my freelance work. I was never completely happy with the name - it was a bit long and a bit generic - and after some thought I decided I would be better trading under my own name - Nick Bearman - as that is a name already known in the GIS community and it is me that I am selling. I am freelance and have no current plans to expand or to hire other people - I am just me!

      Anyway, once I’d made that decision, the question was how to make my new website. I’ve been using WordPress which worked reasonably well, but it has a relatively complex infrastructure under the hood (database, etc.) which:

      1. opens it up to more vulnerabilities and

      2. upgrading WordPress was always something that needed to be done every so often, and then I had to make sure everything worked as I wanted.

      I looked around and found various examples that were similar to what I wanted to achieve:

      I mostly used these to think about content, but it was also helpful to consider the different technologies as well. More people were using WordPress that I thought, and often they were not ‘obviously’ WordPress sites. I wanted something simple, and certainly something I could update easily. Easy of updating was a common theme! To quote Pokateo / Kate:

      From [https:]]

      At this point, Quarto had been released and they had some interesting possibilities for websites. I’d dabbled a bit with Quarto for PDF documents and websites (including A geographer’s introduction to QGIS & R) after using RMarkdown for several years. Quarto looked ideal, so I started experimenting with it. It is plain text, and can work with GitHub, which I am using fairly regularly.

      Quarto also has a very good website, with lots of examples including creating a website [https:]] and you can also choose from a variety of different themes [https:]] .

      After various rounds of development, I came up with this site, [https:] It is (I hope) a simple site which has what I need on it. It also supports blogs, which I do contribute to semi-regularly. It is also all static pages, so once it is updated it can just sit there and doesn’t need any database provision or anything else to run. The new site also incorporated a search, which is handy.

      You can host it through GitHub Pages, and there are various options to automatically compile it using continuous integration, but I decided to keep things simple, to compile the site locally and the push to GitHub. Sometimes the potential to automate things isn’t worth the time to set it up!

      from [https:]] CC license

      Transferring my blog posts from WordPress (geospatialtrainingsolutions.co.uk and nickbearman.me.uk) was a bit of a faff but it is getting there. It is a work in progress. I have found a semi-automated">[https%3A%2F%2Fgithub,folder%20in%20your%20quarto%20blog">semi-automated] way of doing this, but it will still take some time. I’m also trying to extract a static copy of the WordPress sites for archiving, with the Simpy Static WordPress plugin looking useful.

      I also used to have a contact form, which I received some useful contacts through so I wanted to include this. Quarto as such doesn’t include such a form, as there is no interaction, but I had a brainwave and decided to use a Google Forms instead. We’ve used these a lot at OSGeo:UK and they work really well.

      I hope you found this useful - do let me know what you think!

      And if you want to learn more about GIS, checkout my new Training Courses page and if you want a bespoke course, make use of my new Contact Form!

    • sur Crowdsourcing Neighborhood Borders

      Publié: 19 September 2024, 11:29am CEST par Keir Clarke
      Is your neighborhood where you think it is? In a world where cities are constantly changing, the power of crowdsourcing is helping redefine neighborhood borders. While official maps draw static lines, the people who live in these urban spaces often see things differently. What one person considers the "end" of their neighborhood could be another's starting point, creating a patchwork of local

    • sur Mappery: Archimedes

      Publié: 19 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Reinder sent this from his visit to Warsaw

      “… in the beautifully 18th C. baroque decorated main hall, Aula Leopoldina, in the University Museum in Wroc?aw, Poland. “

    • 18 September 2024

    • sur pycsw Team: Using keywords from a thesaurus as queryables

      Publié: 18 September 2024, 8:59pm CEST
      Using keywords from a thesaurus as queryables

      A common convention in catalogues is the use of keywords from a dedicated thesaurus. The assignment of these keywords can then later be used to filter or query the catalogue by these terms. To achieve this use case in pycsw, some configuration needs to be tailored. This blog post indicates the changes needed for this scenario.

      For this example we’ll use a keyword from the INSPIRE Themes thesaurus. We will define a new queryable inspiretheme, which will be populated with the relevant keyword (if present).

      You can repeat these steps for any other thesaurus.

      Extra database column

      Extend the records table in the database with an extra field for the selected thesaurus. This is usually a manual operation on the database.

      ALTER TABLE records
ADD inspiretheme VARCHAR(255);
      Add parameter to pycsw

      In pycsw/core/config.py the newly created database column can be registered to pycsw.

      'pycsw:InspireTheme': 'inspiretheme',
      Add column to mapping

      etc/mappings.py links the pycsw parameter to the columnname in the table.

      'pycsw:InspireTheme': 'inspiretheme',
      Define parameter as queryable

      Which of the parameters are queryable is defined in pycsw/core/repository.py.

      'inspiretheme': self.dataset.inspiretheme,
      Add parameter to record results?

      Keywords are already published in records, so there is generally no need to extend the record with the new parameter. If needed you can do so in pycsw/ogc/api/records.py (Line 1150).

      Populate the parameter from record imports

      We have 2 options here, either manage the population of the column within the database as part of an insert trigger on the record.themes field. Alternatively update pycsw/core/metadata.py so the column is populated when records are imported.

      For the second option consider the following code. For each of the keyword blocks, it tries to match the thesaurus title or uri and, if matched, adds the keywords to the new parameter.

      _set(context, recobj, 'pycsw:InspireTheme', ", ".join(
    [", ".join(k.name for k in t.keywords if k.name not in [None,'']) for t in md_identification.keywords if ( hasattr(t,'thesaurus') and 
        t.thesaurus not in [None,''] and ((
            'title' in t.thesaurus and t.thesaurus['title'] not in [None,''] and
            t.thesaurus['title'] in ['GEMET - INSPIRE themes, version 1.0','GEMET Themes, version 2.3']
        ) or (
            'uri' in t.thesaurus and t.thesaurus['uri'] not in [None,''] and
            t.thesaurus['uri'] == 'http://inspire.ec.europa.eu/theme')))]))
      Add parameter to OGC API - Records facets

      Facets enable to further limit search results. Keywords from thesauri are very useful to add as facet. Add the paremeter to default.yml.

      facets:
    - type
    - inspiretheme

    • sur Mappery: North Quabbin Lager

      Publié: 18 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Doug shared this can of North Quabbin Lager from the Honest Weight Brewing co. Nice spot.

      In case you have never heard of North Quabbin, it is not a place in a Harry Potter novel, it’s halfway between Albany and Boston

    • sur 15 Minutes Cities by Sony CSL

      Publié: 18 September 2024, 10:29am CEST par Keir Clarke
      Sony Computer Science Laboratories in Rome have released a new interactive map which provides 15 Minute City accessibility scores for nearly every city in the world. The '15-minute city' is an urban planning concept aimed at designing cities in a way that ensures residents can access most of their daily needs—such as work, shopping, healthcare, education, and recreation—within a 15-minute walk

    • sur GeoServer Team: GeoServer 2.26.0 Release

      Publié: 18 September 2024, 2:00am CEST

      GeoServer 2.26.0 release is now available with downloads (bin, war, windows), along with docs and extensions.

      This is a stable release of GeoServer recommended for production use. GeoServer 2.26.0 is made in conjunction with GeoTools 32.0, GeoWebCache 1.26.0, ImageIO-EXT 1.4.13, and JAI-EXT 1.1.27.

      Thanks to Peter Smythe (AfriGIS) and Jody Garnett (GeoCat) for making this release and everyone who has helped out during this release cycle. Special thanks Andrea for helping with release announcement, and Torben for troubleshooting the build server and docker environment for this release.

      DOI

      Nightly build testing

      This release cycle we asked our new user forum to test a nightly build, as we did not have capacity to make a release candidate.

      Thanks to Daniel Calliess for responding during our public testing cycle. Daniel noted that he had to add /geoserver/webresources to his proxy for the OpenLayers preview to function. This change is due to an ongoing effort to move all CSS and JS to external resources allowing Content Security Policy headers to be introduced.

      Security Considerations

      This release addresses security vulnerabilities and is a recommended upgrade for production systems.

      • CVE-2024-34711 Improper ENTITY_RESOLUTION_ALLOWLIST URI validation in XML Processing (SSRF) (High 7.3)
      • CVE-2024-35230: Welcome and About GeoServer pages communicate version and revision information (Moderate 5.3)

      See project security policy for more information on how security vulnerabilities are managed.

      • GEOS-11400 About Page Layout and display of build information
      Java 17 Support

      The binary distribution and the Windows installer now work with Java 17.

      When using the war distribution with Tomcat and Java 17 double check the Server status page. If the Java Rendering Engine is listed as “Unknown”, double check the Running in Java 17 production considerations.

      Thanks to Andrea Aime and everyone who worked on testing this in different environments.

      • GEOS-11467 Update Marlin, make the bin package compatible with Java 17
      Docker Updates

      The base image tomcat:9.0.95-jdk17-temurin-jammy is now used - providing the latest Tomcat 9 and Java 17. The docker crew changed from using ubuntu:22.04 with our own Tomcat install script earlier in the year.

      To try out GeoServer 2.26.0 with docker:

      docker pull docker.osgeo.org/geoserver:2.26.0 
docker run -it -p8080:8080 docker.osgeo.org/geoserver:2.26.0

      Thanks to Nils Bühner (terrestris) and everyone who has contributed to the Docker build.

      Search improvement

      A small but fun change for the layer preview - it is now easier to find just the layer you are looking for using quotes to isolate an individual word.

      Thanks to Alessandro Ricchiuti for this work.

      • GEOS-11351 Exact term search in the pages’ filters
      Extensive MapML Improvements

      Thanks to Natural Resources Canada for sponsoring an extensive set improvements for the MapML extension.

      This update was carried out by a group of GeoSolutions devs, Andrea Aime, Daniele Romagnoli and Joseph Miller.

      • GEOS-11322 MapML WMS Vector Representation include query filter
      • GEOS-11324 MapML WMS Vector Representation Style Classes
      • GEOS-11337 Support feature tiles in MapML
      • GEOS-11349 MapML Use WMS Resource Consumption Limit to specify max image size
      • GEOS-11461 Enable MapML Viewer output for WFS getFeature.
      • GEOS-11486 Adding custom dimensions to MapML
      • GEOS-11528 Update MapML viewer to latest release 0.14.0
      • GEOS-11471 Remove Sharding configuration support from MapML
      Demo Requests page rewritten

      The Demo Request page has been rewritten to use JavaScript to issue POST examples. This provides a much better user experience:

      • Show Result lists the response headers to be viewed along side the returned result (with an option for XML pretty printing).
      • Show Result in a New Page is available to allow your browser to display the result.

      The WCS Request Builder and WPS Request Builder demos now have the option to show their results in Demo Requests page. Combined these changes replace the previous practice of using an iframe popup, and have allowed the TestWfsPost servlet to be removed.

      For more information please see the Demo requests in the User Guide.

      Thanks to David Blasby (GeoCat) for these improvements, made on behalf of the GeoCat Live project.

      • GEOS-11390 Replace TestWfsPost with Javascript Demo Page
      JTS 1.20.0 Update

      We are overjoyed to update to the latest JTS 1.20.0 release which includes a new implementation of spatial relationships.

      Use -Djts.relate=ng to try out the new implementation (replacing RelateOp with theReleateNG next generation implementation). Let us know how it goes, a future update will make this setting the default and expand the approach to “prepaired geometry” bulk operations used for WFS Queries.

      Thanks to Martin Davis (CrunchyDB) for the JTS improvements, and Jody Garnett (GeoCat) for the release and GeoServer update.

      Raster Attribute Table Extension

      A new extension is available that takes advantage of the GDAL Raster Attribute Table (RAT). This data structure provides a way to associate attribute information for individual pixel values within the raster. This provides a table that links each cell value in the raster to one or more attributes on the fly.

      Thanks to Andrea Aime (GeoSolutions) for the development and NOAA for sponsoring this new capability. Please see the user guide Raster Attribute Table support for more information.

      • GEOS-11376 Graduate Raster Attribute Table to extension
      GeoCSS improvements

      GeoCSS can now perform scale dependent rendering by the zoom level, assuming web mercator by default, but allowing the configuration of a different gridset as well. It’s also possible to create multi-layer styles and use them as style groups.

      @mode 'Flat';
@TileMatrixSet 'WorldCRS84Quad'

tiger:poly_landmarks {

  /* @title parks and green spaces */
  [CFCC in ('D82', 'D32', 'D84', 'D85')] {
    fill: #B4DFB4;
    stroke: #88B588;
  }; 
  …
}

tiger:tiger_roads [@z > 12] {
  stroke: #666666, #FFFFFF;
  stroke-width: 6, 4;
  z-index: 1, 2;
  …
}

…

      Thanks to Andrea Aime (GeoSolutions) for this work, performed in preparation for the FOSS4G-NA 2024 vector tiles workshop.

      Geostationary satellite AUTO code

      AUTO:97004 has been introduced as a new vendor extension to WMS AUTO codes. It implements the geostastionary satellite project and allows to change the central meridian as part of the GetMap request.

      Thanks to Andrea Aime (GeoSolutions) for this work, and Eumetsat for sponsoring it.

      labelPoint function improved

      The labelPoint function has been improved with more precise calculation of the polygon label points, and not requiring to specify a tolerance any longer. This helps get better maps, especially with tiling enabled (fixed labelling point no matter which tile is requested):

        <sld:TextSymbolizer>
    <sld:Geometry>
      <ogc:Function name="labelPoint">
        <ogc:PropertyName>the_geom</ogc:PropertyName>
      </ogc:Function>
    </sld:Geometry>
  </sld:TextSymbolizer>

      Thanks to Andrea Aime (GeoSolutions) for this work, performed in preparation for the FOSS4G-NA 2024 vector tiles workshop.

      Improved vector tiles generation

      A few new vendor options have been added in GeoServer, that control how vector tiles are built, with the objective of producing smaller, faster, more useful vector tiles.

      • vt-attributes: comma separated list of attributes included in the vector tile
      • vt-labels: when true, generates a sidecar -label layer for polygons, with the label point of the polygon (vector tile clients generally cannot produce a good label placement otherewise)
      • vt-label-attributes:: attributes included in the label point layer
      • vt-coalesce: if true, takes all features in the tile sharing the same attribute values, and coalesces their geometries into a single multi-geometry.

      Here is an example style using the above vendor options, in GeoCSS:

      @mode "Flat";

tiger:poly_landmarks {
  fill: gray;
  vt-attributes: 'CFCC,LANAME';
  vt-labels: true;
}

tiger:tiger_roads [@z > 11] {
  stroke: black;
  vt-attributes: 'NAME';
  vt-coalesce: true;
}

tiger:poi [@z > 12] {
  mark: symbol(square);
}

      The GWC layer preview has also been improved to show the vector tile feature attributes on hover:

      Thanks to Andrea Aime (GeoSolutions) for this work, performed in preparation for the FOSS4G-NA 2024 vector tiles workshop.

      GeoPackage QGIS Compatibility Improvements

      A number of issues affecting interoperability with QGIS have been addressed:

      GeoPackage extension output could contain field types that are not supported by GDAL. It turns out the GeoPackage export was picking up some of the file type information intended for PostGIS resulting output that could not be read by other programs such as QGIS.

      We were also able to fix up the TIMESTAMP information representation as DATETIME, making the file format timezone agnostic as intended.

      Thanks to David Blasby (GeoCat) for these fixes made on behalf of Zeeland and South Holland.

      • GEOS-11416 GeoPackage output contains invalid field types when exporting content from PostGIS
      New image mosaic merge behaviors, MIN and MAX

      These two new image mosaic merge modes activate when multiple images overlap with each other, choosing respectively the minimum and maximum value amongst the super-imposed pixels.

      Thanks to Andrea Aime for the work, and the US National Research Laboratory for sponsoring it.

      Release notes

      New Feature:

      • GEOS-11322 MapML WMS Vector Representation include query filter
      • GEOS-11324 MapML WMS Vector Representation Style Classes
      • GEOS-11352 REST service for URL checks
      • GEOS-11376 Graduate Raster Attribute Table to extension
      • GEOS-11390 Replace TestWfsPost with Javascript Demo Page
      • GEOS-11414 Adding css-uniqueRoleName

      Improvement:

      • GEOS-11271 Upgrade spring-security to 5.8
      • GEOS-11325 Add properties to set additional security headers
      • GEOS-11337 Support feature tiles in MapML
      • GEOS-11338 CapabilityUtil SearchMinMaxScaleDenominator should include support for multiple NamedLayers
      • GEOS-11349 MapML Use WMS Resource Consumption Limit to specify max image size
      • GEOS-11351 Exact term search in the pages’ filters
      • GEOS-11369 Additional authentication options for cascaded WMS WMTS data stores
      • GEOS-11370 Refactor inline JavaScript in the TestWfsPost Page
      • GEOS-11371 Refactor inline JavaScript in the GetMap OpenLayers format
      • GEOS-11379 Refactor inline JavaScript in the OGC API modules
      • GEOS-11400 About Page Layout and display of build information
      • GEOS-11401 Introduce environmental variables for Module Status page
      • GEOS-11427 metadata: “fix all” to support changing config repeatable field
      • GEOS-11443 REST API does not take effect immediately due to 10 minute authentication cache
      • GEOS-11461 Enable MapML Viewer output for WFS getFeature.
      • GEOS-11467 Update Marlin, make the bin package compatible with Java 17
      • GEOS-11477 Add a max and a min merge mode for image mosaics
      • GEOS-11486 Adding custom dimensions to MapML
      • GEOS-11488 Double-Click-to-Copy featurecaption variable reference
      • GEOS-11495 Support multi-layer output in CSS
      • GEOS-11502 Permit resize on user/group/role palette textbox to allow for extra long role names
      • GEOS-11503 Update mongo schemaless DWITHIN to support non-point geometry
      • GEOS-11515 Add support for zoom level rule filtering in CSS
      • GEOS-11526 GeoFence: slow GeoServer response when there are many roles and layergroups
      • GEOS-11527 Add new vector tiles generation options in style body: vt-attributes, vt-coalesce, vt-labels, vt-label-attributes
      • GEOS-11528 Update MapML viewer to latest release 0.14.0
      • GEOS-11531 When coalescing linestrings in vector tiles output, fuse them to create a single long line

      Bug:

      • GEOS-7183 Demo request/wcs/wps pages incompatible with [HTTPS]
      • GEOS-11202 CAS extension doesn’t use global “proxy base URL” setting for service ticket
      • GEOS-11266 csw-iso: missing fields in summary response
      • GEOS-11314 Error in IconService when style has multiple FeatureTypeStyle
      • GEOS-11385 Demo Requests functionality does not honour ENV variable PROXY_BASE_URL
      • GEOS-11416 GeoPackage output contains invalid field types when exporting content from PostGIS
      • GEOS-11422 MapML License Metadata Stored With Incorrect Keys
      • GEOS-11430 CiteComplianceHack not correctly parsing the context
      • GEOS-11446 [INSPIRE] Incorrect behavior for unsupported languages
      • GEOS-11462 500 error thrown when double adding a user to a group via REST with JDBC user/group services
      • GEOS-11484 DirectRasterRenderer is not respecting advancedProjectionHandling and continuosMapWrapping format_options
      • GEOS-11530 Adding or removing a grid subset in the layer caching tab, causes the grid dropdown to get duplicated

      Task:

      • GEOS-11341 Upgrade NetCDF to 5.3.3
      • GEOS-11360 Upgrade Apache POI from 4.1.1 to 5.2.5
      • GEOS-11362 Upgrade Spring libs from 5.3.32 to 5.3.33
      • GEOS-11374 Upgrade Spring version from 5.3.33 to 5.3.34
      • GEOS-11375 GSIP 224 - Individual contributor clarification
      • GEOS-11393 Upgrade commons-io from 2.12.0 to 2.16.1
      • GEOS-11395 Upgrade guava from 32.0.0 to 33.2.0
      • GEOS-11397 App-Schema Includes fix Integration Tests
      • GEOS-11402 Upgrade PostgreSQL driver from 42.7.2 to 42.7.3
      • GEOS-11403 Upgrade commons-text from 1.10.0 to 1.12.0
      • GEOS-11404 Upgrade commons-codec from 1.15 to 1.17.0
      • GEOS-11407 Upgrade jackson from 2.15.2 to 2.17.1
      • GEOS-11464 Update Jackson 2 libs from 2.17.1 to 2.17.2
      • GEOS-11470 Upgrade the version of Mongo driver for schemaless plugin from 4.0.6 to 4.11.2
      • GEOS-11471 Remove Sharding configuration support from MapML
      • GEOS-11472 Upgrade freemarker from 2.3.31 to 2.3.33
      • GEOS-11473 Upgrade guava from 33.2.0 to 33.2.1
      • GEOS-11475 Upgrade commons-codec from 1.17.0 to 1.17.1
      • GEOS-11478 Upgrade commons-lang3 from 3.14.0 to 3.15.0
      • GEOS-11479 Upgrade junit from 4.13.1 to 4.13.2
      • GEOS-11480 Update map fish-print-lib 2.3.1
      • GEOS-11506 Upgrade Spring version from 5.3.37 to 5.3.39 and Spring security from 5.8.13 to 5.8.14
      • GEOS-11508 Update OSHI from 6.4.10 to 6.6.3
      • GEOS-11512 Upgrade jasypt from 1.9.2 to 1.9.3
      • GEOS-11532 Update to JTS 1.20.0
      • GEOS-11533 Update org.apache.commons.vfs2 to 2.9.0
      • GEOS-11544 Upgrade to ImageIO-EXT 1.4.13
      • GEOS-11545 Update to JAI-EXT 1.1.27

      For the complete list see 2.26.0 release notes.

      Community Updates

      Community modules are shared as source code to encourage collaboration. If a topic being explored is of interest to you, please contact the module developer to offer assistance.

      Community module development:

      • GEOS-10690 Task manager plugin is missing dependencies
      • GEOS-10824 gs-flatgeobuf extension can clash with “directory of shapefiles” datastores
      • GEOS-11331 OAuth2 can throw a “ java.lang.RuntimeException: Never should reach this point”
      • GEOS-11358 Feature-Autopopulate Update operation does not apply the Update Element filter
      • GEOS-11381 Error in OIDC plugin in combination with RoleService
      • GEOS-11412 Remove reference to JDOM from JMS Cluster (as JDOM is no longer in use)
      • GEOS-11466 move reusable elements of the graticule plugin to GeoTools
      • GEOS-11469 Datadir catalog loader does not decrypt [HTTPStoreInfo] passwords
      • GEOS-11518 DGGS JDBC store SQL encoder should not force the timezone to CET
      • GEOS-11519 Make DGGS rHealPix tests run again
      • GEOS-11521 Expose a JNDI variant of the DGGS Clickhouse datastore
      • GEOS-11541 STAC search endpoint sortby query not working with POST
      OGC APIs feeling “at home”

      OGC API modules now nicely slot into the home page in the corresponding functional section, e.g., since both provide raw vector data, both OGC API Features and WFS show up in the same area:

      Thanks to David Blasby (GeoCat) for this work.

      Data directory loader

      The “Data Directory loader”, by Gabriel Roldan (Camptocamp), is a replacement data directory loader, reading the XML configuration files at startup. It has been optimized to achieve better parallelism and be more efficient over network file systems.

      It can be found amongst the nightly builds, it’s a simple drop in replacement, just unzip the plugin in WEB-INF/lib and restart. Let us know how it works for you.

      WFS HTML Freemarker output

      The WFS HTML Freemaker output format is a community module generating HTML in response to GetFeature, using the GetFeatureInfo Freemarker templates.

      Thanks to Alessio Fabiani (GeoSolutions) for starting this activity.

      Graticule module

      The graticules module is the combination of a data store and a rendering transformation allowing to generate graticules at multiple resolutions, and optionally placing the graticule labels at the map borders.

      Thanks to Ian Turton for working on this activity. Ian needs a few more people to try this out before it can be included in our GeoServer roadmap.

      Developer Updates

      GeoServer team has identified quite the challenges for GeoServer 2024 Roadmap Plannings.

      Wicket Progress

      After initial testing of 2.26-M0 milestone release we held off including Wicket 9 until after the 2.26.0 release. Thanks to Peter Smythe and Jody Garnett for testing.

      Thanks to Brad Hards who started this work in November 2023, and David Blasby who helped bring this up to a state it could be tested ahead of the 2.26.0 release.

      Spring Security 5.8

      Thanks to Andreas Watermeyer (ITS Digital Solutions) completed this important update.

      This is the last stopping place before Spring Security 6, and the last chance to work with the OAuth2 community modules.

      About GeoServer 2.26 Series

      Additional information on GeoServer 2.26 series:

      Release notes: ( 2.26.0 | 2.26-M0 )

    • 17 September 2024

    • sur Mappery: Watervliet Shaker Village

      Publié: 17 September 2024, 11:00am CEST
      Pièce jointe: [télécharger]

      Patrick Curley shared this – A map of the Watervliet Shaker Village at the Shaker Heritage Society in Albany, NY.

    • sur World Level Zero

      Publié: 17 September 2024, 10:37am CEST par Keir Clarke
      How well traveled are you?My new map World Level Zero turns your travel experiences into a global achievement tracker. Whether you've been globetrotting for years or are just getting started, World Level Zero allows you to plot your personal journey across the globe and turn your wanderlust into a tangible score.What Is World Level Zero?At its core, World Level Zero revolves around a simple

    • sur Every Basketball Court on Google Maps

      Publié: 16 September 2024, 9:30am CEST par Keir Clarke
      The Pudding has mapped Every Outdoor Basketball Court in the U.S.A.. I'm not sure why The Pudding decided to collate satellite imagery of every basketball court visible in Google Maps' aerial imagery but it is quite fun to play with.My guess is that Every Outdoor Basketball Court in the U.S.A. is an experiment by The Pudding in using computer vision to detect, recognize and classify objects in
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