Nous utilisons des cookies pour vous garantir la meilleure expérience sur notre site. Si vous continuez à utiliser ce dernier, nous considèrerons que vous acceptez l'utilisation des cookies. J'ai compris ! ou En savoir plus !.
Un Planet est un site Web dynamique qui agrège le plus souvent sur une seule page, le contenu de notes, d'articles ou de billets publiés sur des blogs ou sites Web afin d'accentuer leur visibilité et de faire ressortir des contenus pertinents aux multiples formats (texte, audio, vidéo, Podcast). C'est un agrégateur de flux RSS. Il s'apparente à un portail web.
Vous pouvez lire le billet sur le blog La Minute pour plus d'informations sur les RSS !
  • Feeds
  • Categories
  • Tags

    • Feeds

    4655 items (1 unread) in 55 feeds

    Géomatique anglophone

    Skip to page: 1 2 3 ... 14
     
    • 11 December 2024

    • sur The Interactive Murder Map

      Posted: 11 December 2024, 12:05pm CET by Keir Clarke
      Norwegian newspaper VG has been mapping murders in Norway since the turn of the millennium. The cumulative data in Murder in Norway allows the paper to provide some fascinating insights into Norwegian homicides. For example, this year, 61% of murder victims have been killed by a family member or a partner/ex-partner. Last year, 45% of murder victims were killed by their partner or ex-partner.

    • sur Mappery: Standing on New York State

      Posted: 11 December 2024, 11:00am CET

      We stopped at a rest stop on our way south through New York State, you know I love a floor map! This one shows parks and museums in the state. I agree with the signs saying “I love NY”

    • 10 December 2024

    • sur Le blog de Geomatys: Stages 2025 !

      Posted: 10 December 2024, 3:22pm CET
      Stages Geomatys pour 2025
      • 10/12/2024
      • Jordan Serviere
      Rejoignez nous en 2025 !

      Geomatys propose pour 2025 deux nouvelles offres de stages :

      ?Montpellier – 3 à 6 mois

      Traitement de données géospatiales pour un outil cartographique de prédictions de risques d’émergence de maladies infectieuses

      Learn more

      ?Montpellier – 3 à 6 mois

      ? Entre mars et septembre 2025

      Développement d’un algorithme de Machine Learning pour la prévision des pics de turbidité

      Learn more Menu logo-geomatys Linkedin Twitter Youtube

      The post Stages 2025 ! first appeared on Geomatys.

    • sur Fernando Quadro: WebGIS sob Medida

      Posted: 10 December 2024, 1:00pm CET

      WebGIS é uma tecnologia usada para exibir e analisar dados espaciais na Internet. Ele combina as vantagens da Internet e do GIS oferecendo um novo meio de acessar informações espaciais sem a necessidade de você possuir ou instalar um software GIS.

      A necessidade de divulgação de dados geoespaciais têm estimulado cada vez mais o uso de ferramentas WebGIS para apresentações interativas de mapas e de informações relacionadas por meio da internet.

      As soluções adotadas na apresentação destes mapas devem apresentar um equilíbrio entre facilidade de uso, riqueza de recursos para visualização e navegação entre os dados, e funcionalidades geoespaciais para pós processamento, características que devem ser adequadas para cada perfil de usuário que acessará o WebGIS.

      Se você e sua empresa possuem dados geoespaciais e querem disponibilizá-las na Web, o caminho natural para isso é o desenvolvimento de um WebGIS. Mas, se você não tiver uma equipe de TI, ou um especialista em desenvolvimento GIS, não se preocupe, a Geocursos pode te ajudar.

      Nossa experiência em GIS nos habilita a entregar soluções baseadas nessa tecnologia utilizando ferramentas open source de visualização geográfica aliada a soluções criativas para o seu negócio.

      ? Quem saber mais?

      Acesse e peça um orçamento: [https:]]
      WhatsApp: [whats.link]

    • sur Mappery: Clock Map

      Posted: 10 December 2024, 11:00am CET

      BarryRuderman of Raremaps.com shared this with us “Check out the anemoscope at Kensington Palace dating back to the reign of William III. #mapsinthewild #maps

      I love that London appears as the centre of the world (well Europe at least)

    • sur How Good is Your Map Memory?

      Posted: 10 December 2024, 10:16am CET by Keir Clarke
      Discover the World, One Click at a Time!Tripgeo has released another exciting, map-based game that challenges you to explore your geographic knowledge like never before! Map Memory allows you to center an interactive map anywhere in the world to create a unique map game, entirely based on the local geography.Whether you're a geography whiz or a curious traveler, Map Memory is perfect for anyone

    • sur OSGeo Announcements: [OSGeo-Announce] Tom Kralidis receives the 2024 Sol Katz Award

      Posted: 10 December 2024, 10:00am CET

      [https:]]

      Tom Kralidis was honoured with the 2024 Sol Katz Award, presented on 6 December 2024 at FOSS4G 2024 in Belém, Brazil.

      This was the 20th year of the award.

      2024-12-09

      We are honoured to announce that Tom Kralidis is the recipient of the 2024 Sol Katz Award.

      You may know Tom through his activities within the GeoPython community, specifically through pygeoapi, pycsw, OWSLib, GeoHealthCheck, pygeometa, and the list goes on. Tom also plays a critical role in promoting OGC standards, throughout FOSS4G projects and also connecting the OGC + OSGeo communities.

      Tom is very active at the OSGeo Board level, and other committees within the foundation. He is also active in the World Meteorological Organization (WMO).

      But you will most likely know him from various FOSS4G workshops around the world, where he helps users share their spatial information through known standards and Open Source software.

      Tom Kralidis is a longtime leader in the FOSS4G community, and it warms our heart to finally thank him for his decades of tireless effort, in promoting sharing.

      The FOSS4G community is full of people doing amazing work, and today we take a moment to shine the spotlight on one person, who has long deserved a thank-you, Tom Kralidis.

      Thanks Tom!

      2024 Sol Katz award

      About the award

      The Sol Katz Award for Free and Open Source Software for Geospatial (FOSS4G) is awarded annually by OSGeo to individuals who have demonstrated leadership in the FOSS4G community. Recipients of the award have contributed significantly through their activities to advance open source ideals in the geospatial realm. The award acknowledges both the work of community members, and pay tribute to one of its founders, for years to come.

      Read more about Sol Katz at Awards

      1 post - 1 participant

      Read full topic

    • 09 December 2024

    • sur gvSIG Batoví: 3 LIBROS ACTUALES E IMPRESCINDIBLES

      Posted: 9 December 2024, 7:52pm CET
      3 LIBROS ACTUALES E IMPRESCINDIBLES

    • sur Fernando Quadro: 12 características de um Profissional GIS

      Posted: 9 December 2024, 1:00pm CET

      No cenário geoespacial em rápida evolução de hoje, ser um profissional de GIS é mais do que apenas trabalhar com mapas e dados.

      Requer uma mistura única de conhecimento técnico, pensamento crítico, criatividade e colaboração.

      Quer você esteja apenas começando ou seja um especialista experiente, essas 12 características essenciais podem ajudá-lo a se destacar e prosperar na indústria geoespacial.

      ?Conhecimento em tecnologia
      ?Atenção aos detalhes
      ?Comunicador eficaz
      ?Estar sempre aprendendo
      ?Orientado por dados
      ?Colaborativo
      ?Gerente de projeto
      ?Pensador crítico
      ?Apaixonado por geografia
      ?Solucionador criativo de problemas
      ?Tomador de decisões
      ?Pensador analítico

      Qual dessas características você acredita ser a mais importante para o sucesso em GIS? Conte nos comentários!

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

    • sur Do You Live in 15 Minute City?

      Posted: 9 December 2024, 12:09pm CET by Keir Clarke
      Imagine stepping out of your home and finding your favorite café, grocery store, and park just minutes away. For residents of New York or Seattle, this is a daily reality. But in sprawling cities like Houston or Indianapolis, such convenience remains a dream for many. Thanks to The Washington Post, you can now discover how walkable your city is compared to other U.S. cities.The Washington Post

    • sur Mappery: Bike Race

      Posted: 9 December 2024, 11:00am CET

      MaddieCaraway shared this “#MapsInTheWild- Navigating the bike course while I chase my dad @CarawayJd doing an @IRONMANtri!!

    • 08 December 2024

    • sur Mappery: Aberfan

      Posted: 8 December 2024, 11:00am CET

      Nick Clark shared these Gatepost-style memorial to the houses which stood where Heilbronn Way now looms over Aberavon #MapsIntheWild

    • sur Sean Gillies: Late fall biking

      Posted: 8 December 2024, 4:55am CET

      I've decided to try to ride a bike for exercise more in 2025. Run harder, but run less, with more active recovery and low-intensity outings on a bike. At least until June, when I need to start building the running and hiking endurance that I will need in September.

      I got a new bike to make this more fun. It's a Rocky Mountain Solo C50 and I bought it from my favorite local bike shop, Drake Cycles, last Saturday. The first thing I did was pedal it from home up Spring Creek Trail to Pineridge Open Space and ride some laps around the pond. It sure beats riding my commuter bike on dirt and gravel. I haven't bought a new bike or any new bike components in 10 years. Electronic shifters feel like magic to me.

      https://live.staticflickr.com/65535/54189616719_ef97cbfdda_b.jpg

      A dark blue-green bike with wide drop handlebars leaning on an interpretive sign in a dry valley under and overcast sky.

      So far this week I've done two rides from the barn where we keep our horses while Bea has been doing her equestrian stuff. One at sunset and one at sunrise. I've been three miles east of the barn and seven miles north of the barn, following roads on the PLSS section grid.

      https://live.staticflickr.com/65535/54189616674_92bf31726f_b.jpg

      A dirt road at dusk, headlights of an approaching truck, and orange sunset glow behind the Rocky Mountains.

      In the neighborhood of the barn, the ground is completely free of snow and quite dry. Passing trucks raise medium density clouds of dust. There are scattered homes out here, and vehicles going to and fro periodically. There are large construction sites, too, which can mean a wave of large rigs pulling trailers.

      https://live.staticflickr.com/65535/54189616694_998304cd98_b.jpg

      A rolling dirt road and brown grassland with snow-dusted mountains in the background.

      I've got a lot to learn about this kind of riding. The right tire pressure for road and trail conditions, for example, and how to get in and out of the drops smoothly. How to descend and corner safely, and how to survive washboard surfaces. Dressing, too. I'm riding at a low intensity and don't generate as much heat as I do when I run.

      One of my favorite things about riding further east is the panoramic views of the Front Range peaks. I can see Pikes Peak, Mount Evans, Longs Peak, and the Mummy Range, a span of 200 kilometers, from the top of every rise.

    • 07 December 2024

    • sur Sean Gillies: Productive running

      Posted: 7 December 2024, 9:53pm CET

      At last, I'm less than 1% injured and am getting back into regular and productive running. We've had a long stretch of mild and dry weather here, which makes it easy to just lace up and go. I ran four times last week, including a nice hilly run in Lory State Park, and will run three times this week. Thursday I did some harder running and a bunch of strides for the first time since June.

      Some faint numbness lingers on my left quad, but my hip, butt, and leg are otherwise just fine. My doctor prescribed a course of prednisolone in early November to calm down my pinched nerve and that seemed to banish the last of my Achilles tendonitis as well. My right heel and calf haven't been pain-free in a long time. It's really nice to feel good.

      https://live.staticflickr.com/65535/54189776380_5425f11980_c.jpg

      Shoes, legs, and shorts in warm December sunshine

    • sur The Bellingcat Open Source Challenge

      Posted: 7 December 2024, 1:37pm CET by Keir Clarke
      Wordle and Minute Cryptic and Scrambled Maps will have to a back-seat this month - there's a new daily challenge in town: the Bellingcat Open Source Challenge.Launched by Bellingcat, a renowned platform for open-source research and investigative journalism, the Open Source Challenge is running throughout December. Five days a week, Bellingcat is posting a new challenge, inviting participants to

    • sur US Segregation Maps

      Posted: 6 December 2024, 12:24pm CET by Keir Clarke
      Visualizing U.S. Segregation Through Interactive MapsCensus Dots is an interactive map of 2020 U.S. census data. On the map, millions of colored dots each represent one individual. The colors indicate the race or ethnicity that individuals identified with in the 2020 Census. Although the map does not mention this explicitly, most census dot maps randomize the locations of dots within each

    • sur Mappery: Goose Creek

      Posted: 6 December 2024, 11:00am CET

      Corvus sent us this 3D relief map at the Goose Creek rest area in Minnesota. Looks pretty big to me

    • sur WhereGroup: Datenschutzkonforme Bildveröffentlichung: Gesichter und Nummernschilder automatisch verpixeln mit Python

      Posted: 6 December 2024, 10:05am CET
      Autokennzeichen und Gesichter verpixeln und datenschutzkonforme Bilder erstellen mit Python in nur wenigen Schritten. Wir zeigen wie’s geht.
    • 05 December 2024

    • sur Fernando Quadro: 10 aplicações GIS em Energias Renováveis

      Posted: 5 December 2024, 1:00pm CET

      À medida que o mundo transita para um futuro energético mais limpo e sustentável, o papel dos Sistemas de Informação Geográfica (GIS) se tornou indispensável.

      O GIS nos permite enfrentar os desafios complexos do desenvolvimento de energia renovável com precisão e eficiência.

      Seja identificando os principais locais para fazendas solares, avaliando o potencial de energia eólica ou planejando infraestrutura hidrelétrica, o GIS fornece os insights espaciais necessários para tomar decisões informadas.

      Além do planejamento de projetos, o GIS oferece suporte a avaliações ambientais, mitiga riscos e ajuda a integrar energia renovável em redes elétricas, garantindo que esses desenvolvimentos sejam sustentáveis e resilientes.

      Ele também capacita provedores de energia e formuladores de políticas a envolver comunidades, reduzir emissões e enfrentar as mudanças climáticas de frente.

      Aqui estão 10 maneiras principais pelas quais o GIS está moldando o setor de energia renovável, promovendo inovação e impulsionando mudanças impactantes:

      ?Integração da Rede
      ?Avaliação de Recursos
      ?Avaliação de Impacto Ambiental
      ?Engajamento da Comunidade
      ?Análise de Risco
      ?Monitoramento e Manutenção
      ?Análise de Uso do Solo
      ?Planejamento de Infraestrutura Energética
      ?Mitigação de Mudanças Climáticas
      ?Mapeamento de Demanda Energética

      Gostou desse post? Conte nos comentários ?

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

    • sur North America's Shrinking Railways

      Posted: 5 December 2024, 11:48am CET by Keir Clarke
      Passenger rail services in 1980 and 2024 interactive map visualizes the Amtrak (red) and VIA Rail (blue) systems in 1980 and 2024, alongside independent railways and commuter services (green). The map highlights a notable decline in the availability of passenger rail services in both the USA and Canada over the last 44 years.Using the map's slide control, you can easily switch between the

    • sur Mappery: van Eesteren

      Posted: 5 December 2024, 11:00am CET

      Reinder shared this pic from his visit to the van Eesteren Pavilion at a museum in Amsterdam dedicated to the Dutch architect Van Eesteren (1897-1988). Looks like someone is getting “hands on”

    • sur OTB Team: Look back on the OTB Users Days 2024

      Posted: 5 December 2024, 9:55am CET
      The OTB Users Days 2024 were held on November 21th and 22th at Artilect Fablab in Toulouse. Thanks to everyone who attended the event! Plenary Talks On Thursday several talks were given on various subjects: On Friday morning, we had a presentation of the PLUTO portal (video) Brainstorming session On Thursday and Friday afternoons, we […]
    • 04 December 2024

    • sur The Bird Migration Atlas

      Posted: 4 December 2024, 2:29pm CET by Keir Clarke
      The European Turtle Dove is a relatively small bird, weighing only about 100 grams (3.5 ounces). Despite its size, the European Turtle Dove undertakes an incredible long-distance migration of around 5,000 kilometers (3,000 miles) from Europe to sub-Saharan Africa every year. This remarkable journey, along with the migratory routes of hundreds of other bird species, can be explored in detail on

    • sur Fernando Quadro: WebGIS para monitoramento de Terras Indígenas

      Posted: 4 December 2024, 1:00pm CET

      Terras indígenas, como a tribo Alto Turiaçu no Maranhão, enfrentam ameaças crescentes de incêndios florestais. Para ajudar na proteção dessas áreas, a Jéssica Uchoa criou uma aplicação WebGIS que monitora focos de incêndio e analisa seus impactos com dados geoespaciais em tempo real e históricos.

      ? Como funciona:

      ? FIRMS (NOAA-21) Realizar o monitoramento de focos de incêndio em tempo real (últimas 24h);

      ? Sentinel-2: Análise de cicatrizes de queimadas com imagens de alta resolução;

      ? MIRBI: Identificação de pontos ativos de incêndio;

      ? Camadas do IBGE: Fornece a localização de territórios indígenas, ajudando na orientação e no planejamento das análises.

      Você pode acessar uma versão do WebGIS no seguinte link: [https:]

      Gostou desse post? Conte nos comentários ?

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

    • sur Mappery: Cité de l’espace

      Posted: 4 December 2024, 11:00am CET

      Camille found a map in a Mir space station module displayed at the Cité de l’espace, Toulouse, France.

    • sur Camptocamp: Camptocamp and IGN Partnership Wins 2024 Acteurs du Libre Award for Best Public-Private Collaboration

      Posted: 4 December 2024, 1:00am CET
      Enclosure: [download]
      We’re delighted to announce that Camptocamp, alongside our partner IGN (Institut National de l'Information Géographique et Forestière), has been awarded the prestigious 2024 Acteurs du Libre Prize in the category of Best Public-Private Collaboration.
    • 03 December 2024

    • sur Fernando Quadro: Segredos para desenvolver seu WebGIS

      Posted: 3 December 2024, 7:18pm CET

      Você está enfrentando problemas no desenvolvimento do seu WebGIS?

      Deixe-me poupar algum tempo da sua frustração, pois você pode estar cometendo alguns erros comuns:

      ? Pular direto para a codificação sem um roteiro
      ? Seguir tutoriais que só fazem sentido se você já tiver conhecimento dos termos do WebGIS
      ? Tentar construir ferramentas sem entender o fluxo de dados no WebGIS
      ? Perder tempo “ajustando” ferramentas sem ter a mínima ideia de onde o código deveria ficar

      Parece familiar?

      Vou te contar alguns “segredos” para o desenvolvimento do seu WebGIS:

      ? Entenda o fluxo de dados e os termos essenciais
      ? Saiba exatamente quais elementos de programação são essenciais
      ? Domine o uso das bibliotecas WebGIS para obter exatamente o que precisava

      Gostou desse post? Conte nos comentários ?

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

    • sur The Joy-Plot Map of Europe

      Posted: 3 December 2024, 11:24am CET by Keir Clarke
      The Ridgeline Map of European Population Density is an interactive map that provides a multi-resolution visualization of Europe's population density in the form of a joy-plot.Joy-plots, also known as ridgeline plots, draw their inspiration from one of pop culture’s most iconic visuals: the album cover of Unknown Pleasures by Joy Division. Designed by Peter Saville in the 1970s, the cover

    • sur Geotripper - the Traveling Salesman Game

      Posted: 2 December 2024, 9:10am CET by Keir Clarke
      Only a few days after the release of the flight sim game Travel Cat the prolific TripGeo is back with another entertaining geographical map game. GeoTripper offers players a unique challenge: charting the shortest possible route through a series of random destinations around the globe! GeoTripper is a lot of fun to play. I was fortunate enough to get a sneak peek of the game over

    • sur Lifetime Net Elevation Scores

      Posted: 30 November 2024, 9:46am CET by Keir Clarke
      Topi Tjukanov's popular Notable People map highlights the most "notable" person born in specific locations around the world. The designation of "most notable" is determined based on the highest number of page views of individuals listed on Wikipedia's "People from X" pages.I’ve often pondered the idea of creating a complementary Notable Deaths map that showcases the most famous person to have

    • sur Travel Cat's Aerial Adventures

      Posted: 29 November 2024, 10:34am CET by Keir Clarke
      I have seen a few flight simulator games created with 3D maps over the years,, but Travel Cat to let you pilot a plane as a cat. Flying a feline-piloted plane past the Eiffel Tower in Paris or around the Statue of Liberty in New York is as enchanting as it sounds. It is also a lot of fun.Travel Cat uses the Google Maps API's 3D view to create a basic flight simulator that allows you to

    • sur Drowning in Plastic

      Posted: 28 November 2024, 10:34am CET by Keir Clarke
      There are five large ocean garbage patches. Most people have heard of the Great Pacific Garbage Patch, but there are also the North Atlantic, South Atlantic, Indian Ocean, and South Pacific garbage patches.These garbage patches form due to ocean currents called gyres, which trap floating debris in circulating patterns. Over time, waste such as plastic bottles, fishing nets, and microplastics
    • 27 November 2024

    • sur geomatico: Geomatico ya es socio de QGIS España

      Posted: 27 November 2024, 2:37pm CET

      En Geomatico creemos firmemente en la colaboración como motor para impulsar la innovación y la excelencia en nuestro sector. Por ello, hemos decidido asociarnos a QGIS España, una organización que comparte nuestra pasión por los sistemas de información geográfica (SIG) y el código abierto. Esta alianza refuerza nuestro compromiso con el uso de herramientas accesibles y de alta calidad para ofrecer soluciones geoespaciales avanzadas a nuestros clientes.

      Esta asociación nos permitirá estar más conectados con la comunidad de usuarios y desarrolladores de QGIS en España, lo que abre nuevas oportunidades de aprendizaje, intercambio de conocimientos y participación en iniciativas conjuntas. Estamos convencidos de que trabajar de la mano con QGIS España no solo beneficiará a nuestros proyectos actuales, sino que también contribuirá al desarrollo del ecosistema SIG a nivel nacional.

      Nuestra asociación con QGIS España también refleja nuestra visión de contribuir activamente al desarrollo de la tecnología SIG open source en el ámbito nacional. Al formar parte de esta comunidad, no solo apoyamos una herramienta clave en nuestro sector, sino que también fomentamos el avance de soluciones de código abierto que promueven la sostenibilidad y la accesibilidad tecnológica.

      www.qgis.es/author/geomatico

      www.qgis.es/asociacion

    • sur Mapping the Underground Art Scene

      Posted: 27 November 2024, 10:12am CET by Keir Clarke
      Earlier this month Maps Mania reviewed Subway Stories, a visualization of subway journeys on the NYC subway system. The map was developed for the 2024 MTA Open Data Challenge.  Now, the MTA has announced the winner of that challenge: Art Off the Rails, an interactive map showcasing the artworks of the MTA.Art Off the Rails uses the MTA's extensive art catalog to map the locations

    • sur Mappery: Florentine Map Window

      Posted: 27 November 2024, 10:00am CET

      David Sherren said “I spotted this rather attractive office window in the Borgo San Jacopo, Florence, promoting a collection of hotels. As a bonus, there were some nice maps for sale at the print dealer next door.”

      I’m a bit confused by some of the writing being on the inside of the window.

    • 26 November 2024

    • sur Travel Times in the Roman & British Empires

      Posted: 26 November 2024, 6:30pm CET by Keir Clarke
      In Jane Austen's Pride and Prejudice, the heroine Elizabeth Bennet marries Fitzwilliam Darcy. This marriage separates Elizabeth from the rest of her family, both in terms of class and physical distance. As the new mistress of Pemberley, Darcy's grand estate in Derbyshire, Elizabeth must move over 130 miles away from her childhood home of Longbourn, in rural Hertfordshire.While 130 miles might

    • sur Mapping the U.S. Electoral Divide

      Posted: 26 November 2024, 11:11am CET by Keir Clarke
      In the United States, a persistent and striking political divide is evident between urban and rural areas. High-density urban regions overwhelmingly tend to support Democratic candidates, while low-density rural areas lean Republican. This geographical polarization shapes the outcomes of elections and reflects broader cultural, economic, and ideological divisions. A compelling exploration

    • sur Giant Dancing Virtual Geoglyphs

      Posted: 25 November 2024, 10:26am CET by Keir Clarke
      @duncan77mccabe Strava art animation through the streets of Toronto! This took me 121 runs from January to October 2024. #strava #running #toronto #purplehat #active #run #Canada #motivation #madden25 #ncaa #purple #hat #sofitukker #sofi #tukker ? original sound - Duncan McCabe Accountant and avid runner Duncan McCabe has invented a new form of art - virtual animated geoglyphs. Using the
    • 24 November 2024

    • sur From GIS to Remote Sensing: Tutorial: Download Sentinel-2 data and calculate the NDVI in Python using Remotior Sensus

      Posted: 24 November 2024, 3:21pm CET
      This post is about Remotior Sensus, a Python package that allows for the processing of remote sensing images and GIS data.In this tutorial we'll see how to search and download Sentinel-2 images and calculate the Normalized Difference Vegetation Index (NDVI) using Remotior Sensus.Following the video of this tutorial.
      Read more »

    • sur Mappery: Plantage district Amsterdam

      Posted: 24 November 2024, 11:00am CET

      ?Doug Greenfield shared this map of the Plantage district in Amsterdam

    • 23 November 2024

    • sur Free and Open Source GIS Ramblings: GeoParquet in QGIS – smaller & faster files for the win!

      Posted: 23 November 2024, 10:23pm CET

      tldr; Tired of working with large CSV files? Give GeoParquet a try!

      “Parquet is a powerful column-oriented data format, built from the ground up to as a modern alternative to CSV files.” [https:]]

      (Geo)Parquet is both smaller and faster than CSV. Additionally, (Geo)Parquet columns are typed. Text, numeric values, dates, geometries retain their data types. GeoParquet also stores CRS information and support in GIS solutions is growing.

      I’ll be giving a quick overview using AIS data in GeoPandas 1.0.1 (with pyarrow) and QGIS 3.38 (with GDAL 3.9.2).

      File size

      The example AIS dataset for this demo contains ~10 million rows with 22 columns. I’ve converted the original zipped CSV into GeoPackage and GeoParquet using GeoPandas to illustrate the huge difference in file size: ~470 MB for GeoParquet and zipped CSV, 1.6 GB for CSV, and a whopping 2.6 GB for GeoPackage:

      Reading performance

      Pandas and GeoPandas both support selective reading of files, i.e. we can specify the specific columns to be loaded. This does speed up reading, even from CSV files:

      Whole fileSelected columns
      CSV27.9 s13.1 s
      Geopackage2min 12s ?20.2 s
      GeoParquet7.2 s4.1 s

      Indeed, reading the whole GeoPackage is getting quite painful.

      Here’s the code I used for timing the read times:

      As you can see, these times include the creation of the GeoPandas.GeoDataFrame.

      If we don’t need a GeoDataFrame, we can read the files even faster:

      Non-spatial DataFrames

      GeoParquet files can be read by non-GIS tools, such as Pandas. This makes it easier to collaborate with people who may not be familiar with geospatial data stacks.

      And reading plain DataFrames is much faster than creating GeoDataFrames:

      But back to GIS …

      GeoParquet in QGIS

      In QGIS, GeoParquet files can be loaded like any other vector layer, thanks to GDAL:

      Loading the GeoParquet and GeoPackage files is pretty quick, especially if we zoom into a small region of interest (even though, unfortunately, it doesn’t seem possible to restrict the columns to further speed up loading). Loading the CSV, however, is pretty painful due to the lack of spatial indexing, which becomes apparent very quickly in the direct comparison:

      (You can see how slowly the red CSV points are rendering. I didn’t have the patience to include the whole process in the GIF.)

      As far as I can tell, my QGIS 3.38 ‘Grenoble’ does not support writing to or editing of GeoParquet files. So I’m limited to reading GeoParquet for now.

      However, seeing how much smaller GeoParquets are compared to GeoPackages (and also faster to write), I hope that we will soon get the option to export to GeoParquet.

      For now, I’ll start by converting my large CSV files to GeoParquet using GeoPandas.

      More reading

      If you’re into GeoJSON and/or PyGeoAPI, check out Joana Simoes’ post: “Navigating GeoParquet: Lessons Learned from the eMOTIONAL Cities Project”

      And if you want to see a global dataset example, have a look at Matt Travis’ presentation using Overture data:

    • sur I'm Sending You Back to the Future!

      Posted: 23 November 2024, 12:03pm CET by Keir Clarke
      I've spent today on a time-traveling adventure through 18th-century London. Standing in the bustling, tourist-filled Trafalgar Square, I opened up Allmaps Here and was instantly transported back to King’s Mews - an elaborate courtyard that stood here long before the Battle of Trafalgar was fought and etched its name onto London's streets. Suddenly the city came alive with elegant Georgian charm

    • sur Mappery: Upside down

      Posted: 23 November 2024, 11:00am CET

      Michaël Galien shared this photo of a former globe converted into a lamp, placing the South on top of it

    • 22 November 2024

    • sur Bluesky Mapping

      Posted: 22 November 2024, 11:00am CET by Keir Clarke
      Update 2: And here is a third map. EU Skeet Capitals replaces the place-name labels of EU capital cities with the latest Bluesky messages which mention the city.Update: I got busy and created a second map. Social Media Locations (comment below with suggestions for a better name). This map allows you to search for real-time Bluesky mentions of locations around the world. To start a search you

    • sur Mapping Mythical Islands & Imaginary Lands

      Posted: 21 November 2024, 9:24am CET by Keir Clarke
      Hy-Brasil is a mythical island, which was once believed to be located west of Ireland. According to legend, the island was typically shrouded in mist and only visible once every seven years. It appeared on several maps from the 14th to 16th centuries, often depicted as a circular island divided by a central river or strait.Hy-Brasil is also shown in the Atlantic Ocean near Ireland on Map

    • sur The World's Changing Climate Zones

      Posted: 20 November 2024, 10:04am CET by Keir Clarke
      Climate change is one of the defining challenges of our time. It is more important than ever to visualize and understand its likely impacts. The new Köppen-Geiger Explorer hopes to meet this challenge by providing a powerful and interactive way to visualize climate zones and their transitions over time, based on the widely used Köppen-Geiger climate classification system.The Köppen-Geiger
    • 19 November 2024

    • sur OSGeo Announcements: [OSGeo-Announce] FOSS4G Europe 2024 Tartu final press release

      Posted: 19 November 2024, 10:05pm CET

      News item: FOSS4G Europe 2024 Tartu final press release - OSGeo
      November 2024

      Dear OSGeo community,

      it has now been some months since FOSS4G Europe 2024 in Tartu, Estonia.

      We, the LOC would like to thank you all for your participation, either on site or via the interwebs, for your proposals for presentations and workshops - you helped us put together this amazing event in our hometown. You've helped us create something that will always have a very special place in our hearts.

      The final press-release for FOSS4G Europe 2024 is - finally slight_smile: - ready and can be accessed under the foundation news at osgeo.org [1]. Further links to photos, presentation videos on TIB-AV portal and YouTube, and to the academic track proceedings are all in there.

      We hope you enjoyed your time in Tartu, and in the surrounding areas if you had time to explore a bit more.

      So one last time - on behalf of the FOSS4G Europe 2024 LOC, thank you and see you very soon.

      Tõnis Kärdi
      FOSS4G Europe 2024 chair

      [1] - FOSS4G Europe 2024 Tartu final press release - OSGeo

      About FOSS4G Europe
      --------------------------------
      The FOSS4GE conference, a European extension of the Open Source Geospatial Foundation (OSGeo) annual FOSS4G event, connects professionals in the geoinformation software realm. FOSS4G Europe 2024 in Tartu was the eastern and northernmost (and as it turned out - largest) ever FOSS4G Europe conference to date.

      2024.europe.foss4g.org FOSS4G Europe 2024

      The FOSS4G Europe 2024 conference is taking place 1-7 July in the beautiful city of Tartu, Estonia.

      OSGeo FOSS4G (Events) - OSGeo

        With a robust schedule of keynote speakers, workshops, paper sessions and talks, FOSS4G offers a great opportunity for newcomers and regular visitors alike. This ‘annual gathering of the tribes’ boasts: A massive selection of presentations A...

      Est. reading time: 2 minutes

      About OSGeo
      -------------------
      The Open Source Geospatial Foundation (OSGeo) 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.

      OSGeo OSGeo - OSGeo

      OSGeo, the OpenSource for GeoSpatial Fosters global adoption of open geospatial technology by being an inclusive software foundation.

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

      1 post - 1 participant

      Read full topic

    • sur GeoTools Team: GeoTools 32.1 released

      Posted: 19 November 2024, 8:53pm CET
      GeoTools 32.1 released The GeoTools team is pleased to announce the release of the latest stable version of GeoTools 32.1: geotools-32.1-bin.zip geotools-32.1-doc.zip geotools-32.1-userguide.zip geotools-32.1-project.zip This release is also available from the OSGeo Maven Repository and is made in conjunction with GeoServer 2.26.1 and GeoWebCache 1.26.1.

    • sur OSGeo Announcements: [OSGeo-Announce] Welcoming our new OSGeo Charter Members 2024

      Posted: 19 November 2024, 8:51pm CET

      News item: Welcoming our new OSGeo Charter Members 2024 - OSGeo
      November 2024

      OSGeo would like to welcome our new OSGeo Charter Members 2024.

      We are happy to announce that the following people were accepted as OSGeo Charter Members:

           Alberto Vavassori from Italy
           Caitlin Haedrich from United States of America
           Cholena Smart from Australia
           Claudio Iacopino from Italy
           Dave Barter from United Kingdom
           Felipe Matas from Chile
           Gresa Neziri from Kosovo
           Hamidreza Ostadabbas from Iran
           Mathieu Pellerin from Cambodia
           Matthias Daues from Germany
           Maxime Collombin from Switzerland
           Petr Sevcik from Czech Republic
           Ponciano da Costa de Jesus from Timor-Leste
           Sami Mäkinen from Finland
           Scott McHale from Canada
           Tobias Wendorff from Germany
           Vasil Yordanov from Bulgaria
           Vincent Sarago from France
           William Dollins from United States of America
           Youssef Harby from Egypt

      You are welcome to find out about our new members at the following page New Member Nominations 2024 - OSGeo

      In 2024, we had 21 valid nominations and all were accepted.
      This year 300 charter members casted their vote.
      The board approved the new members in November 2024.

      OSGeo has 580 charter members

        - from 74 countries
        - 11 are retired

      Thanks a lot to Luís Moreira de Sousa, Iván Sánchez Ortega, Vicky Vergara (2024 OSGeo Elections CROs) for organizing the OSGeo Election 2024.
      Share this

      See the full list of the OSGeo Charters member and find a link to every profile page there [https:]]

      About OSGeo
      -------------------
      The Open Source Geospatial Foundation (OSGeo) 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.

      OSGeo OSGeo - OSGeo

      OSGeo, the OpenSource for GeoSpatial Fosters global adoption of open geospatial technology by being an inclusive software foundation.

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

      1 post - 1 participant

      Read full topic

    • sur GeoSolutions: FREE Webinar: MapStore at work, NORDIQ webgis product

      Posted: 19 November 2024, 11:09am CET

      You must be logged into the site to view this content.

    • sur Mappery: Traveling seeds

      Posted: 19 November 2024, 11:00am CET

      Seed store map of where they ship their heirloom seed. Source: Cartonaut

    • sur Your Global Local Radio Map

      Posted: 19 November 2024, 9:44am CET by Keir Clarke
      I'm currently listening to XEFO-AM from Mexico City, a radio station that seems to exclusively play classic, early 20th-century Spanish-language songs. The station is just one of about 100 local radio stations in Mexico City that appear on the Radiocast interactive map.Radiocast is an interactive globe featuring over 7,000 radio stations broadcasting from around the world—all of which can be

    • sur The Butterfly Superhighway

      Posted: 18 November 2024, 9:42am CET by Keir Clarke
      Every year, millions of Monarch butterflies undertake an epic journey across North America, traveling thousands of miles from their breeding grounds in the United States and Canada to their wintering habitats in central Mexico. In the spring, they then return to their northern locations in the United States and Canada.What makes this migration even more astonishing is that no single butterfly

    • sur Welcome to the Metaverse

      Posted: 16 November 2024, 9:35am CET by Keir Clarke
      Imagine a digital world layered seamlessly over our own, where every street corner and landmark is brought to life in 3D by a global community of gamers. This is Niantic’s vision for the real-world metaverse, and it’s already starting to take shape.For several years, AR gaming company Niantic has been leveraging its hugely popular games, such as Pokémon GO and Pikman Bloom, to gather location
    • 15 November 2024

    • sur gvSIG Batoví: Finalizó el VII Curso–Concurso Geoalfabetización mediante la utilización de Tecnologías de la Información Geográfica

      Posted: 15 November 2024, 8:36pm CET

      Un año más de excelentes proyectos desarrollados por estudiantes de todo el país que han decidido animarse y experimentar con el uso de las Tecnologías de Información Geográfica. Y una vez más estos estudiantes nos sorprenden con el nivel y la calidad de sus trabajos, logrados en apenas 3 meses, debiendo además atender todas sus otras responsabilidades que el estudio les exige.

      Ya son más de 1000 docentes y estudiantes (no sólo de Uruguay, sino que también de México -en 2022- y Colombia -en 2023-) que han participado de esta iniciativa que nació en 2017 y que se realiza anualmente desde entonces, solamente interrumpiéndose en 2020, especialmente por la pandemia del COVID-19.

      Este año nos acompañaron como tutores de los equipos concursantes:

      • Romel Vázquez, Universidad Central «Marta Abreu» de Las Villas (Cuba)
      • Ramon Alejandro Claro Torres, Universidad Central «Marta Abreu» de Las Villas (Cuba)
      • Williams Luis Morales Moya, Universidad Central «Marta Abreu» de Las Villas (Cuba)
      • Neftalí Sillero, Faculdade de Ciências da Universidade do Porto (Portugal) 
      • Carlos Lara, Facultad de Ciencias de la Universidad Católica de la Santísima Concepción (Chile)
      • A/P Nadia Chaer, Comunidad gvSIG Uruguay (Uruguay)
      • Lic. Maximiliano Olivera, profesor de Geografìa, CeRP del Litoral  (Uruguay)
      • Antoni Pérez Navarro, profesor de los Estudios de Informática, Multimedia y Telecomunicación, Universitat Oberta de Catalunya (España)
      • Agustín Reyna, Dirección Nacional de Topografía (Uruguay)

      El jurado estuvo integrado por:

      • por el Ministerio de Transporte y Obras Públicas: Arq. Sergio Acosta y Lara
      • por la Dirección General de Educación Secundaria: Insp. Mónica Canaveris
      • por Ceibal: Mag. Lic. Sofía García
      • por la Dirección de Educación Técnico Profesional: Prof. Julio A. Rodríguez
      • por la Universidad Politécnica de Madrid: Dr. Luis Manuel Vilches Blázquez
      • por la Asociación Nacional de Profesores de Geografía: Prof. Irene Lucía Knecht Santana
      • Por la Universidad Central «Marta Abreu» de Las Villas: Dr. Mikel Moreno Hernández

      A continuación, los videos de los proyectos ganadores:

      proyecto ganador

      proyecto finalista

      proyecto finalista

      Una vez más debemos agradecer a todas y todos los que han hecho posible que esto sucediera: al equipo del MTOP; a las y los tutores; a los integrantes del jurado; a todas y todos los colaboradores en el Plan Ceibal (gracias por su invalorable asistencia); a toda la Asociación gvSIG (gracias a su incansable apoyo es que este proyecto es posible); a la ANEP, en especial a la Dirección General de Educación Secundaria pero también a la Dirección General de Educación Técnico Profesional; a la Universidad Politécnica de Madrid; a las instituciones que este año nos han apoyado: Universidad Central Marta Abreu de Las Villas y la Asociación Nacional de Profesores de Geografía; y a todas las autoridades de las instituciones involucradas que han decidido continuar apoyando esta iniciativa, la que continúa creciendo.

      Nos vemos el año que viene

    • sur Mappery: Muir Beach

      Posted: 15 November 2024, 11:00am CET

      Cartonaut sent us this nice bronze relief and tactile map of Muir Beach.

    • sur AI for Spatial Data Search

      Posted: 15 November 2024, 9:50am CET by Keir Clarke
      Aino claims to be 'the world’s first AI tool tailored specifically for retrieving and analyzing spatial data'. In essence, Aino is an AI-powered platform that allows you to search and (supposedly) download spatial data from over 10,000 datasets across more than 400 cities, covering points of interest (POI), urban infrastructure, social data, and much more.How Easy is Aino to Use?I found Aino
    • 14 November 2024

    • sur WhereGroup: Material UI Themes und MapComponents

      Posted: 14 November 2024, 2:10pm CET
      Mit Material UI und MapComponents lassen sich flexible, ansprechende Kartenanwendungen gestalten. In unserem Blog zeigen wir, wie Themes und individuelle Anpassungen für eine konsistente und benutzerfreundliche Oberfläche sorgen.

    • sur OSGeo Announcements: [OSGeo-Announce] pgRouting version 3.7.0 release

      Posted: 14 November 2024, 11:25am CET

      The pgRouting Team is pleased to announce the release of pgRouting version 3.7.0
      The latest release is available at [1]
      For discussions on the release, go to [2]

      To see all issues & pull requests closed by this release see the Git closed milestone for 3.7.0 on Github. [3]

      *Support*

        * #2656 Stop support of PostgreSQL12 on pgrouting v3.7
            o Stopping support of PostgreSQL 12
            o CI does not test for PostgreSQL 12

      *New experimental functions*

        * Metrics
            o pgr_betweennessCentrality

      *Official function changes*

        * #2605 Standarize spanning tree functions output
            o Functions:
                + pgr_kruskalDD
                + pgr_kruskalDFS
                + pgr_kruskalBFS
                + pgr_primDD
                + pgr_primDFS
                + pgr_primBFS
            o Standarizing output columns to (seq, depth, start_vid, pred,
              node, edge, cost, agg_cost)
                + Added pred result columns.

      *Experimental promoted to proposed*

        * #2635 pgr_LineGraph ignores directed flag and use negative values
          for identifiers.
            o pgr_lineGraph
                + Promoted to proposed signature.
                + Works for directed and undirected graphs.

      *Code enhancement*

        * #2599 Driving distance cleanup
        * #2607 Read postgresql data on C++
        * #2614 Clang tidy does not work

      *To update your database*

      Download the packaged version from your operating system, and use this command in the database:
      ALTER EXTENSION pgrouting UPDATE TO "3.7.0";

      [1]. Release v3.7.0 · pgRouting/pgrouting · GitHub
      [2]. v3.7.0 · pgRouting/pgrouting · Discussion #2677 · GitHub
      [3]. Issues · pgRouting/pgrouting · GitHub

      1 post - 1 participant

      Read full topic

    • sur NYC's Subway Stories

      Posted: 14 November 2024, 10:46am CET by Keir Clarke
      New York City's subway network is a bustling artery that connects millions of New Yorkers to their daily lives. A new interactive map, Subway Stories, developed for the 2024 MTA Open Data Challenge, visualizes some of the stories and patterns that emerge from the rich flow of New York's subway ridership data. Drawing on comprehensive data from 2023, the visualization provides an

    • sur No Local News

      Posted: 13 November 2024, 8:35am CET by Keir Clarke
      "There are 206 counties in the United States with no news outlets. There are 1,561 counties with only one. More than two newspapers a week are closing, and print frequency is shrinking. Some 7,000 newspaper jobs were eliminated in the past year, almost 2,000 of them in newsroom positions." - The 2024 State of Local News ReportThe Medill School of Journalism at Northwestern University has

    • sur Sean Gillies: Let's fucking go

      Posted: 13 November 2024, 3:16am CET

      I saw a physical therapist yesterday. I had a virtual visit with my physician today. I had a 2 mile hike in the sun around a local reservoir. Now I'm listening to the Glenn Branca Orchestra on The Frow Show and my take on my health is: let's go!

      The expert consensus is that I did not injure my spine, but that muscles in the left side of my hip have clamped down on a nerve. I'm going to proceed as if that is true, foam rolling, walking, and running through the pain, and not worrying about my spine cracking in pieces. I do have a little bit of numbness in my upper left leg and so I will not directly dive into long technical downhill runs. I expect that I'll resolve that soon.

    • 12 November 2024

    • sur Jackie Ng: Announcing: mapguide-rest 1.0 RC6.1

      Posted: 12 November 2024, 2:46pm CET

      I've taken a momentary break from our (admittedly) glacial pace of MapGuide development to put out another release of mapguide-rest 

      This release includes the following changes:

      • Fix missing reverse routing on selection overview
      • Fix bad feature query preparation when querying against watermarked layers
      • Relax strict-typing on MgReaderToGeoJsonWriter::FeatureToGeoJson() so that it can work with MgPaginatedFeatureReader allowing pagination to work again
      • Added missing properties parameter to swagger defn for session-based feature selection route
      Download
      We now return to regularly-scheduled programming of trying to get MapGuide Open Source 4.0 to the finish line.
      As for mapguide-rest, I envision at least once more major RC *after* the final release of MapGuide Open Source 4.0 before finally wrapping things up on development work and pulling the trigger on the mapguide-rest 1.0 final release. Enough of this RC-after-RC business!

    • sur Mappery: Relief map of Ilhabela

      Posted: 12 November 2024, 10:00am CET

      Harry shared this map that he spotted on his holiday in Brazil “I also saw this nice wall in a restaurant on Ilhabella which maybe scores better on the “maps as art” criteria.”

      I like the way that the land is cut out of the plaster exposing the brick.

    • sur The Reemergence of Nuclear Power

      Posted: 12 November 2024, 9:54am CET by Keir Clarke
      When I reviewed the Nuclear Stations Map in August, I was surprised to see that, a little over a decade after the Fukushima disaster, Japan appears to be building at least three new nuclear power plants on its coastline. The Nuclear Stations Map shows all the nuclear plants in the world, whether decommissioned, in operation, or under construction. Currently, the map highlights over 60 new

    • sur Nick Bearman: FOSS4G:UK South West 2024 - Bristol

      Posted: 12 November 2024, 1:00am CET

      It was great to attend FOSS4G:UK South West 2024 in Bristol on 12th Nov, at OSGeo:UK’s now regular Bristol Venue, The Engine Shed. The event was a sell out and we had 62 people in the Engine Shed’s main room.

      This was the first time in a while that I have been to a FOSS4G:UK as an attendee rather than as an organiser - and it made a nice difference! We had 14 great presentations, covering a whole range of topics including digitalization of railways, reproducible science, real time vessel monitoring, landscape heritage, open source funding, cloud native web apps and a whole variety of useful open source tools.

      Unfortunately I missed the first presentation - thanks Great Western Railways! - but one common theme that cropped up a lot was how social media as a tool for open source projects has changed dramatically. James Milner said that social media used to be a great way to promote his program, Terra Draw, but know he gets no where near the same impact from using social media. It’s now a bit of a big unknown, and I particularly liked how he summarised this:

      Interestingly, I sent out a number of social media posts to Twitter (X), Mastodon and LinkedIn, and LinkedIn got the most response, so make of that what you will! Although I think it’s fair to say LinkedIn is not universally loved, as it was memorably described as “Grindr for Business” by Andrew Bailey!

      The presenters have also mastered the use of memes, with Matt Travis hitting home with some of the perils of waiting for large data sets to load:

      and of course also

      It was also fantastic to get FAIR Open Science and FAIR workflows mentioned in the presentation by Richard Conway & Garin Smith from Telespazio, who are in the process of developing an exploration platform that allows researchers both to share their data, code and their methods in a reproducible form.

      I also had the opportunity to speak about GoFundGeo and talk about how OSGeo:UK is funding a range of open source geospatial projects that will have an impact in the UK. Join the OSGeo:UK mailing list or check the website to find out more.

      Nick presenting GoFundGeo, thanks to Sam Franklin for the photo

      Finally, as ever, it was great to meet new people and network again with old friends at these events. I know of at least one contract opportunity, as well a number of potential ones and also I think some new volunteers for OSGeo:UK!

      Thanks very much to all the organisers - Pascal Coulon, Alastair Graham, Sam Franklin, Dan Ormsby, Illya Sparkes-Santos, Ant Scott, as well as everyone who came along and took part.

      If you want help or advice on any open source geospatial tool, or are interested in Introductory or Advanced GIS training in QGIS or R, please do contact me.

    • sur Camptocamp: The role of Open Source in achieving Digital Sovereignty

      Posted: 12 November 2024, 1:00am CET
      Enclosure: [download]
      In today’s digital world, the need for control over one’s digital ecosystem is more important than ever.
    • 11 November 2024

    • sur Mappery: Large scale mapping

      Posted: 11 November 2024, 10:00am CET

      Edwin Wisze shared this “A few of the meeting rooms during the Logius PI planning have a beautiful map as a carpet. Here are a few examples: New York and The Hague”

      I love maps you can walk on, feels like the right scale for me.

      Which is your favourite?

    • sur The European Cycle Map

      Posted: 11 November 2024, 9:36am CET by Keir Clarke
      Cycling in Europe just got easier with the launch of VeloPlanner, a new interactive map that aims to simplify route planning for cyclists by highlighting 'signposted' cycling routes across the continent. By leveraging detailed data from OpenStreetMap (OSM), VeloPlanner offers a comprehensive view of designated bike routes, helping cyclists of all skill levels find paths that suit their needs.&

    • sur GeoServer Team: Exploring CQL/ECQL Filtering in GeoServer

      Posted: 11 November 2024, 1:00am CET

      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 )

      Exploring CQL and ECQL Filtering in GeoServer

      In this session, we want to talk about the Using CQL/ECQL Filters in GeoServer in detail. If you want to access the complete tutorial, click on the link.

      Introduction

      Contextual Query Language (CQL) is a text-based query for search/retrieval adopted by the OGC for the Catalogue Web Services specification. Unlike the XML-based Filter Encoding language, CQL is more readable and easier for manual authoring. However, it has limitations, such as not being able to encode ID filters and requiring the attribute to be on the left side of comparison operators.

      To overcome these limitations, GeoServer offers an extended version called ECQL, which closely resembles SQL and provides greater flexibility. ECQL allows users to define filters for querying data in GeoServer using attribute comparisons, logical operators, and spatial predicates. It is compatible with GeoServer’s REST API and can be used for WMS and WFS requests to retrieve filtered data.

      Note. This video was recorded on GeoServer 2.22.4, which is not the most up-to-date version. Currently, versions 2.25.x and 2.26.x are supported. To ensure you have the latest release, please visit this link and avoid using older versions of GeoServer.

      Note. Future version of GeoServer will include support for CQL2 which provides both a text and a JSON representation.

      Comparison operators

      To compare attribute values or other numeric and text values in your CQL / ECQL (Extended Common Query Language) expressions, you can utilize comparison operators.

      In the Layer Preview section, first click on the OpenLayers option for the topp:states layer. Next, locate and click on the Toggle options toolbar in the top left corner to access the advanced options.

      In the CQL filter box within this toolbar, enter the filter expression STATE_NAME = 'Texas', and then press the Apply button. This filter will retrieve and display the data for the state of Texas.

      By reviewing the following examples using the Toggle options toolbar from the LayerPreview page, you will learn how to effectively understand and apply comparison operators using CQL/ECQL expressions:

      • ‘PropertyIsGreaterThanOrEqualTo’ filter

      This filter shows the states that have more than or equal to 5 million inhabitants.

      PERSONS >= 5000000
      • ‘PropertyIsLike’ filter

      This filter shows the states whose names, contain the letters ‘ing’ like Washington and Wyoming.

      STATE_NAME like '%ing%'
      • ‘PropertyIsBetween’ filter

      This filter shows the states with a population of 5 million to 10 million.

      PERSONS between 5000000 and 10000000
      Spatial operators

      These operators enable you to perform spatial queries and filter data, based on various relationships between geometries. Here are the explanations for some commonly used spatial operators:

      • ‘Intersect’ filter

      This filter allows you to query spatial data in GeoServer based on geometric intersection relationships. This filter returns all features that have any spatial intersection or overlap.

      The syntax for the Intersect filter in CQL is as follows:

      Intersects(the_geom,Point(-90 40))
      • ‘Within’ filter

      The Within filter checks if a spatial object is completely within another spatial object. This filter retrieves all features that are located within the boundaries of a specified geometric shape, using spatial relationships.

      Within(the_geom,Polygon((-100 30,-100 45,-80 45,-80 30,-100 30)))
      • ‘Contains’ filter

      This filter is the inverse of the “Within” filter. It checks if a spatial object completely contains another spatial object and helps you retrieve features that fully enclose the specified geometry.

      CONTAINS(the_geom,LINESTRING(-73.9 43.5,-77.76 42.56))
      Bounding Box operators

      The Bounding Box operator is used to filter data based on a specified bounding box. The “bbox” filter in CQL allows you to query spatial data in GeoServer based on a bounding box or a rectangular area.

      CQL filters can also be utilized with the GET method. To use the bbox filter using the GET method, enter the following code in the URL address bar of your browser:

      http://localhost:8080/geoserver/topp/wms?service=WMS&version=1.1.0&request=GetMap&layers=topp:states&bbox=-124.73142200000001,24.955967,-66.969849,49.371735&width=768&height=330&srs=EPSG:4326&format=application/openlayers&CQL_FILTER=BBOX(the_geom,-110,41,-95,45)

      This filter enables you to retrieve all features that intersect, or are contained within the specified bounding box.

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

    • 10 November 2024

    • sur Mappery: Map van

      Posted: 10 November 2024, 10:00am CET

      I found this Map Van on Portobello Road

    • 09 November 2024

    • sur Sean Gillies: A new CLI for GDAL

      Posted: 9 November 2024, 5:54pm CET

      Even Rouault has proposed a new, modern, and more coherent command line interface (CLI) for the GDAL/OGR project. I think it's a good idea and a good time to do it. I've wanted a better one for about 15 years. Even credits Rasterio for inspiration, and that's gratifying to see. I started writing Rasterio 10 years ago in part because I wanted a better CLI for GDAL.

      What I wanted in a GDAL CLI were the following features:

      • A root command and a few subcommands, one namespace for everything.

      • Uniform arguments and options with predictable ordering and naming.

      • Good documentation of arguments and options.

      • More subcommands with fewer options each. Making gdal_translate into 3-4 commands, for example.

      • Input and output that favor stdin/stdout and JSON.

      • Ease of installation. For example, with pip instead of an OS package manager.

      I estimated in 2013-2014 that it was not feasible for me to achieve those goals within the GDAL project itself. GDAL and its community had no funding for this kind of work at the time. I found the GDAL project's tests somewhat inscrutable and frustrating. A hefty legacy of documentation and folk wisdom about the old ways would have to be updated. Mostly by me, certainly. And the GDAL user community largely did not care. Free software that was fast and effective (and, most of all, free!) was already more than most people had dreamed of. A GIS analyst had so many business and organizational problems to deal with already that the rough edges of gdalinfo and gdal_translate didn't even crack her top 20. Software polish wasn't a big concern in the second decade of FOSS4G. I think it's still a hard thing to sell. Individual consumers will pay money for slick, well-designed software that makes them feel good. Organizations value polish less. And neither GDAL nor Rasterio sell anything to individual consumers.

      Overhauling gdal_translate, ogr2ogr, and friends within the GDAL project looked like a non-starter to me. Pushing a herd of boulders up a hill, by myself, for free, for a community that was largely content with working around and stepping over these boulders. I think I made the right choice for myself. I got to start from scratch, move fast, and use a modern CLI framework. I made a command line interface for Rasterio that, while not perfect, met most of my goals. And I didn't go broke or burn out while doing it.

      Today, thanks to years of fundraising work by Howard Butler, Paul Ramsey, Kristian Evers, and Even, the GDAL project does have funding to overhaul its command line interface as an aspect of overall project health and maintenance. Multiple developers can be paid to work on it. They won't have to donate their time to it as I would have. Rasterio's command line interface can't be adopted by GDAL, or be forked to become GDAL's because it doesn't have all the features of existing GDAL programs (or even of gdal_translate and ogr2ogr for that matter), and my decision to have more subcommands with fewer options is kind of against the grain of GDAL. But the new GDAL CLI can adopt the demonstrably useful features and design of Rasterio's. JSON output, for example, is something that GDAL has already picked up from Rasterio.

      Rasterio will certainly fade a little if the new GDAL CLI is designed and executed well. But that's in the nature of software and software communities. Rasterio has always depended on GDAL and benefited from being built on a technically solid and well loved foundation. And I didn't invent CLI subcommands and JSON output, not at all. It's not unfair. If you succeed in open source, if you move the needle, you will be emulated. In this case, I think we can call it progress. I'm content.

      In the long run, I stand to get half of what I originally wanted from a GDAL CLI, the first three of the six features I listed above. And there's probably still room for a suite of Unix style programs with different opinions and design decisions, especially if it and GDAL agree on basic concepts, arguments, options, and flags.

    • sur Dressing Miku

      Posted: 9 November 2024, 10:36am CET by Keir Clarke
      tldr: miku-earth is an interactive map of people's drawings of the virtual idol Hatsune Miku dressed in the national costumes of countries and subcultures around the world.I like to imagine that Hatsune Miku is just the first step in a new era of virtual celebrities, paving the way for the likes of William Gibson’s Rei Toei to suddenly emerge as real virtual beings. Both Miku and Rei

    • sur Mappery: Kunjapuri

      Posted: 9 November 2024, 10:00am CET

      Elizabeth spotted this street art on her way to the Kunjapuri temple. A quick search suggests that it is the symbol for International Yoga Day but you already knew that didn’t you?

    • sur Sean Gillies: Your account is deactivated

      Posted: 9 November 2024, 5:03am CET

      I stopped using Twitter a while ago. Then it was rebranded as "X". I dithered about deleting my account. Would it be taken over by crypto scammers or an 18 year-old Russian army private or contractor? I've come to the conclusion that I don't care anymore. They can have it if they want. I've downloaded my archive and clicked "deactivate your account".

      If you see a post from an @sgillies on X, it isn't me.

    • 08 November 2024

    • sur Fernando Quadro: Começou a Black Friday Geocursos!

      Posted: 8 November 2024, 12:00pm CET

      A maior promoção de 2024 começa hoje, dia 08 e vai até o dia 10 de novembro.

      ? Essa é a sua chance de adquirir nossos cursos com descontos imperdíveis nessa Black Friday.

      Cursos que estão com desconto:

      ?Combo: PostgreSQL, PostGIS e GeoServer (EAD Videoaula com 38h/aula)
      ?50% de desconto
      ? Acesso por 24 meses

      ?Combo: PostgreSQL, PostGIS, GeoServer e OpenLayers 4 (EAD Videoaula com 53h/aula)
      ?60% de desconto
      ? Acesso por 24 meses

      ?? Os cupons de desconto estão sendo informados no nosso Grupo VIP, basta você clicar no link abaixo :

      ?? [https:]]

    Skip to page: 1 2 3 ... 14
     
    ← Toile géomatique francophone Blogs GeoRezo.net →