Planet Georezo » March 4, 2011

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04 mars 2011
23:23
AnyGeo - GIS, Maps, LBS, Geo and Social Location Technology: Conferences galore and Suggestions for the Surveyor and Mapping Professional
sur Planet Geospatial - http://planetgs.com

There’s no doubt that there’s plenty of events that are just around the corner but where does the surveying and mapping professional spend their money and time? Tthe following are several popular events that are coming up that will be of interest to surveyors and those involved in surveying and mapping technologies – perhaps you [...]
22:32
Letters from the SAL: USB 3.0
sur Planet Geospatial - http://planetgs.com

When it comes to transferring large raster or point cloud data sets that are in the terabyte range, mailing hard drives around is always faster than FTP. Of course copying data to a USB hard drive can be sloooow. If you have not done so already consider in investing in USB 3.0. We've been getting a 10x boost in transfer speed with USB 3.0 as compared to USB 2.0.
USB 3.0 requires different ports than USB 2.0, but all you need to upgrade is a USB 3.0 PCI card, which will run you less than $50. You will also need as USB 3.0 compatible hard drive. We have been using the Seagate GoFlex drives, which support both USB 2.0 and USB 3.0 through an interchangeable base plate. This is very handy in that we can use USB 3.0 to transfer the data on our end and then switch out the base plate to the USB 2.0 model prior to sending the drive to our collaborators, most of whom are still using USB 2.0.

22:20
[Le blog SIG & URBA] COVADIS en détail
sur GeoRezo.net - Géoblogs

Le CERTU vient de publier un rapport sur l'action de la COVADIS intitulé "la standardisation des données géographiques - comprendre l'action de la COVADIS et savoir lire un géostandard".
Un document de moins de 30 pages, très concis et explicite, pour approfondir la présentation faite dans notre article de découverte de cette commission, qui a la mission de favoriser la normalisation des données gaographiques des ministères du développement durable et de l'agriculture.

A mettre dans toutes les mains des géomaticiens qui travaillent dans un ministère ou une collectivité locale pour bien découvrir les éléments de méthode que l'on retrouve dans les en-têtes de chapitre : la nécessaire convergence des SIG, la COVADIS privilégie une approche par thème, définir un noyau d'information commun, un système évolutif, un consensus à rechercher, la subsidiarité de la standardisation;, les données en dehors du champ d'action de la COVADIS, la lecture d'un géostandard, ...

22:20
COVADIS en détail
sur Le blog SIG & URBA

Le CERTU vient de publier un rapport sur l’action de la COVADIS intitulé « la standardisation des données géographiques – comprendre l’action de la COVADIS et savoir lire un géostandard« . Un document de moins de 30 pages, très concis et explicite, pour approfondir la présentation faite dans notre article de découverte de cette commission, qui a [...]

22:13
Geoff Zeiss: Large Water Diversion Projects, Environmental Impact and Convergence
sur Planet OSGeo
Circle of Blue has just published an in-depth article about the South-to-North Water Diversion Project (SNWT) in China. The SNWT is a $64-billion, 50-year effort to divert water from river basins in southern China to arid regions in the north, where serious water shortages restrict economic growth.

This project is one of the largest water diversion projects ever undertaken in the world. The eastern line diverts water from the Yangtze River into a canal in Jiangdu City, from where it is pumped uphill and through a tunnel under the Yellow River. It then flows downhill to reservoirs near Tianjin. The line is 1,152 km long. By 2013 the eastern line will deliver 14.8 km³ per year. By 2014 the central line, which diverts water from the Danjiangkou Reservoir in the south to Beijing via long-distance channels and is 1,264 km long, is scheduled to deliver 13 km³ per year. A western line is in the planning stages.

20th Century Water Diversion Projects

It's worthwhile comparing this project to some of the other major water diversion projects in the 20th Century.
- Los Angeles Aqueduct (1913) ~260 million m³ per year
- Qaraqum Canal (1988) 13 km³ per year
- South-to-North Eastern (2013) 14.8 km³ per year
- South-to-North Central (2014) 13 km³ per year
Qarakum Canal

The Qaraqum (Karakum) Canal, Karshi Canal, and Bukhara Canal projects, diverted between 20 and 60 km³ from the Amu Darya and Syr Darya rivers to cotton irrigation, instead of to the Aral Sea.

The Qarakum Canal, which is 1,375 km in length, carries 13 km³ of water annually from the Amu-Darya River across the Karakum Desert. Because of the primitive engineering of the canal, roughly 50% of the water is lost enroute. The canal is a major factor in what has has been called the largest environmental disaster of all time. By restricting inflow, the Aral Sea has been reduced to less than 10% of its former extent and what's left of the sea is heavily polluted and has been blamed for serious public health problems. The fishing industry has been destroyed. The shrinking of the sea has also been blamed for local climate change.

Largely as a result of the Aral Sea environmental disaster, plans to divert Siberian river water to Central Asia were stopped by Russian ecologists, although a renewed discussion of the project has appeared recently.

Los Angeles Aqueduct

As another example closer to home, of Los Angeles' water requirements, which amount to about 600,000 acre-feet/yr or 740 million cubic meters/year, 88% comes via aqueducts from the Sierra Nevada watershed (via the Los Angeles Aqueduct); the Colorado River (via the Colorado River Aqueduct) and the Sacramento-San Joaquin Delta (via the State Water Project / California Aqueduct). It is also interesting that in California 19% of the state's power consumption is for water, primarily to pump water from the north to the south.

Historically there have been large fluctuations in water deliveries from the main water sources, the Las Angeles Aqueduct, the Metropolital Water District of Southern California, and local groundwater, due to climate conditions. However, LA is now facing permanent reductions in water deliveries from these sources because of environmental issues. Water deliveries over the LA aqueduct are being reduced, largely due to the reallocation of water for environmental mitigation and enhancement, for example, the State Water Resources Control Board Mono Lake decision, which permanently limits water exports from the Mono Basin, the Owens Lake Dust Mitigation Project, and rewatering of the Lower Owens River.

An environmental crisis in the Delta has led to a Federal Court decision that will result in the Metropolitan Water District receiving up to 30 percent less water from the State Water Project.

The San Fernando Groundwater Basin is contaminated and the City intends to accelerate the cleanup of the basin to fully utilize the City’s groundwater supplies.

Water Diversion in the 21st Century

I expect that with rising population and changing climate we are going to see many more water diversion projects in the 21st Century. How we manage the environmental impact is going to be crucial if these projects are going to provide net social benefits. For example, the South-to-North project seems to be different from major 20th Century water diversion projects in at least two ways.

Environmental awareness

First of all and probably as a result of examples like the Aral Sea and the LA Aqueduct, there seems to a greater awareness of the importance of environmental issues. Just earlier this week, Chinese Vice Premier Li Keqiang, while chairing a meeting of the South-to-North Water Diversion Project Construction Commission of the State Council, emphasized how important saving and protecting water resources are in desigining and building the project. He further siad that the project is intended to have long term social benefits, to support a resources-efficient and environmentally-friendly society. Further, he said that pollution treatment and environmental protection are crucial to the project. I think this is important because it shows that at the highest level of the Chinese government there is an awareness of the importance of environmental issues in a project of this size.

Convergence enables holistic design

Secondly, the explosion in engineering capability that we are seeing in the last couple of decades is changing how we design and build. As an example, one of the things I have been seeing is many different areas of design and construction is the convergence of engineering design, geospatial data and technology, and 3D visualization technology (originally developed by the gaming industry.) One of the big benefits of convergence is that it helped make it possible to design projects much more holistically than was possible in the past.

The Changjiang Institute of Survey, Planning, Design and Research (CISPDR), which has provided engineering, surveying, planning, design, and construction services on mega-infrastructure projects throughout China and in other countries, is responsible for overseeing surveying and design on the South-to-North central route. For a project of this size there are many design teams and stakeholders and collaboration between surveying, mapping, design and construction teams and a multitude of local and national design institutes, river commissions, and government ministries is critical. What I find most interesting is that CISPDR's approach to survey and design on this mega-project project integrates geospatial, model-based design, and 3D visualization technology to not only help technical teams to collaborate, but also to include non-technical stakeholders in the design process. On past mega-projects with complex landscape geometries, CISPDR engineers using traditional design software had to design slowly, or risk making errors that would have a large ripple effect elsewhere. On the South-to-North project, engineers were able to simulate complex, real-world environments, enabling them to test the feasibility of their designs and to identify and correct potential construction problems earlier in the design process. And most importantly, in the context of the environmental issues associated with mega-water diversion projects, convergence supported CISPDR's practice of sustainable design on the project by enabling the project team and non-technical stakeholders to view the entire project holistically and to economically minimize waste and environmental impact.

21:56
Between the Poles: Large Water Diversion Projects, Environmental Impact and Convergence
sur Planet Geospatial - http://planetgs.com
Circle of Blue has just published an in-depth article about the South-to-North Water Diversion Project (SNWT) in China. The SNWT is a $64-billion, 50-year effort to divert water from river basins in southern China to arid regions in the north, where serious water shortages restrict economic growth.

This project is one of the largest water diversion projects ever undertaken in the world. The eastern line diverts water from the Yangtze River into a canal in Jiangdu City, from where it is pumped uphill and through a tunnel under the Yellow River. It then flows downhill to reservoirs near Tianjin. The line is 1,152 km long. By 2013 the eastern line will deliver 14.8 km³ per year. By 2014 the central line, which diverts water from the Danjiangkou Reservoir in the south to Beijing via long-distance channels and is 1,264 km long, is scheduled to deliver 13 km³ per year. A western line is in the planning stages.

20th Century Water Diversion Projects

It's worthwhile comparing this project to some of the other major water diversion projects in the 20th Century.
- Los Angeles Aqueduct (1913) ~260 million m³ per year
- Qaraqum Canal (1988) 13 km³ per year
- South-to-North Eastern (2013) 14.8 km³ per year
- South-to-North Central (2014) 13 km³ per year
Qarakum Canal

The Qaraqum (Karakum) Canal, Karshi Canal, and Bukhara Canal projects, diverted between 20 and 60 km³ from the Amu Darya and Syr Darya rivers to cotton irrigation, instead of to the Aral Sea.

The Qarakum Canal, which is 1,375 km in length, carries 13 km³ of water annually from the Amu-Darya River across the Karakum Desert. Because of the primitive engineering of the canal, roughly 50% of the water is lost enroute. The canal is a major factor in what has has been called the largest environmental disaster of all time. By restricting inflow, the Aral Sea has been reduced to less than 10% of its former extent and what's left of the sea is heavily polluted and has been blamed for serious public health problems. The fishing industry has been destroyed. The shrinking of the sea has also been blamed for local climate change.

Largely as a result of the Aral Sea environmental disaster, plans to divert Siberian river water to Central Asia were stopped by Russian ecologists, although a renewed discussion of the project has appeared recently.

Los Angeles Aqueduct

As another example closer to home, of Los Angeles' water requirements, which amount to about 600,000 acre-feet/yr or 740 million cubic meters/year, 88% comes via aqueducts from the Sierra Nevada watershed (via the Los Angeles Aqueduct); the Colorado River (via the Colorado River Aqueduct) and the Sacramento-San Joaquin Delta (via the State Water Project / California Aqueduct). It is also interesting that in California 19% of the state's power consumption is for water, primarily to pump water from the north to the south.

Historically there have been large fluctuations in water deliveries from the main water sources, the Las Angeles Aqueduct, the Metropolital Water District of Southern California, and local groundwater, due to climate conditions. However, LA is now facing permanent reductions in water deliveries from these sources because of environmental issues. Water deliveries over the LA aqueduct are being reduced, largely due to the reallocation of water for environmental mitigation and enhancement, for example, the State Water Resources Control Board Mono Lake decision, which permanently limits water exports from the Mono Basin, the Owens Lake Dust Mitigation Project, and rewatering of the Lower Owens River.

An environmental crisis in the Delta has led to a Federal Court decision that will result in the Metropolitan Water District receiving up to 30 percent less water from the State Water Project.

The San Fernando Groundwater Basin is contaminated and the City intends to accelerate the cleanup of the basin to fully utilize the City’s groundwater supplies.

Water Diversion in the 21st Century

I expect that with rising population and changing climate we are going to see many more water diversion projects in the 21st Century. How we manage the environmental impact is going to be crucial if these projects are going to provide net social benefits. For example, the South-to-North project seems to be different from major 20th Century water diversion projects in at least two ways.

Environmental awareness

First of all and probably as a result of examples like the Aral Sea and the LA Aqueduct, there seems to a greater awareness of the importance of environmental issues. Just earlier this week, Chinese Vice Premier Li Keqiang, while chairing a meeting of the South-to-North Water Diversion Project Construction Commission of the State Council, emphasized how important saving and protecting water resources are in desigining and building the project. He further siad that the project is intended to have long term social benefits, to support a resources-efficient and environmentally-friendly society. Further, he said that pollution treatment and environmental protection are crucial to the project. I think this is important because it shows that at the highest level of the Chinese government there is an awareness of the importance of environmental issues in a project of this size.

Convergence enables holistic design

Secondly, the explosion in engineering capability that we are seeing in the last couple of decades is changing how we design and build. As an example, one of the things I have been seeing is many different areas of design and construction is the convergence of engineering design, geospatial data and technology, and 3D visualization technology (originally developed by the gaming industry.) One of the big benefits of convergence is that it helped make it possible to design projects much more holistically than was possible in the past.

The Changjiang Institute of Survey, Planning, Design and Research (CISPDR), which has provided engineering, surveying, planning, design, and construction services on mega-infrastructure projects throughout China and in other countries, is responsible for overseeing surveying and design on the South-to-North central route. For a project of this size there are many design teams and stakeholders and collaboration between surveying, mapping, design and construction teams and a multitude of local and national design institutes, river commissions, and government ministries is critical. What I find most interesting is that CISPDR's approach to survey and design on this mega-project project integrates geospatial, model-based design, and 3D visualization technology to not only help technical teams to collaborate, but also to include non-technical stakeholders in the design process. On past mega-projects with complex landscape geometries, CISPDR engineers using traditional design software had to design slowly, or risk making errors that would have a large ripple effect elsewhere. On the South-to-North project, engineers were able to simulate complex, real-world environments, enabling them to test the feasibility of their designs and to identify and correct potential construction problems earlier in the design process. And most importantly, in the context of the environmental issues associated with mega-water diversion projects, convergence supported CISPDR's practice of sustainable design on the project by enabling the project team and non-technical stakeholders to view the entire project holistically and to economically minimize waste and environmental impact.
21:08
got geoint?: Episode 3 — Geospatial Revolution Project
sur Planet Geospatial - http://planetgs.com

A new video has been added to the GotGeoint? Blog. Click here to watch it.
21:06
Between the Poles: Imagine, Design, Create
sur Planet Geospatial - http://planetgs.com

At TED 2011, Autodesk released a new book Imagine, Design, Create that looks into the innovative thinking in a wide range of companies and designers. The book includes interviews with industry innovators using novel design approaches and capabilities for designing buildings, products and entertainment.

The book delves into the impact that new technologies such as 3D printing, network connectivity, bioinformatics, genomics, artificial intelligence, nanotechnology, robotics, and mobile computing are having in accelerating the evolution of design.

21:06
Geoff Zeiss: Imagine, Design, Create
sur Planet OSGeo

At TED 2011, Autodesk released a new book Imagine, Design, Create that looks into the innovative thinking in a wide range of companies and designers. The book includes interviews with industry innovators using novel design approaches and capabilities for designing buildings, products and entertainment.

The book delves into the impact that new technologies such as 3D printing, network connectivity, bioinformatics, genomics, artificial intelligence, nanotechnology, robotics, and mobile computing are having in accelerating the evolution of design.

20:58
Slashgeo.org: Google Geonews: New Trike StreetView Images, Google Earth and the Middle East, Israel StreetView, and more
sur Planet Geospatial - http://planetgs.com
Here's the recent Google-related geonews.

From official sources:
- Google added new StreetView images taken from their Trike (bicycle) from places inaccessible by motorized means
- There's an entry named KML and Google Earth API: Recent updates and resources
- There's a new Protected Layer Map to keep Google Fusion Tables tables private when used with the Google Maps API Premier
- There's an entry on ski slopes in Google Earth
- You can now tweet your Hotpot ratings in Google Maps for Android
From other sources:
- Ogle Earth offers an informative entry on Google Earth and the Middle East
- Ogle Earth also offers an entry on the Dutch-German border dispute and Israel Street View
- The GEB offers news of running Google Earth on the Motorola Xoom
- The GEB has another entry on Shaderlight, which generates beautiful photorealistic 3D models from Google's SketchUp. There's a MacOS version now.
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20:17
Urban Mapping Blog: Urban Mapping’s Industry-Leading Hosted Mapping Platform Incorporates Mass Transit Data; Expands On-Demand Geospatial Data Offerings
sur Planet Geospatial - http://planetgs.com

We’re thrilled to announce new availability of our public transportation data through our hosted mapping platform, Mapfluence. Previously available as a stand-alone database, we have now integrated core elements of our mass transit data into the Mapfluence on-demand data catalog — the most comprehensive on-demand geospatial data catalog in the industry, with over 10,000 high-value [...]
19:55
Geo Tweets from the Geo Twitter-Sphere
sur Planet Geospatial - http://planetgs.com

We follow the Geo Twitter-sphere very closely… the following are just a few of the tweets we’ve “faved” in the past couple of days… please follow us @GISuser and/or @gletham so we can pick up on your tweets.
@GISCI_GISP Map Contest 2011 – You could win $500! See rules @Geogypsea Calling all students! [...]
18:37
JGrass Tech Tips: uDig in osgeo4w again with 1.2.1
sur Planet Geospatial - http://planetgs.com

After some nice user making me notice that I was laging 3 years behind with the uDig version in the osgeo for windows installer, I wrapped myself up and with the gentle help of the osgeo guys (I had 2 tickets open since 3 years :( ) I got back on track.

The result is that uDig 1.2.1 is available in the osgeo4w installer. I really like the installer of osgeo4w and I will definitely put also BeeGIS as an installation option into it.

Want to try it out? Just run the installer here.

18:21
Beyrouth et ses urbanistes. Une ville en plans (1946-1975)
sur Les Cafés géographiques

Eric Verdeil, Beyrouth et ses urbanistes. Une ville en plans (1946-1975), Presses de l'IFPO (Institut français du Proche-Orient), Beyrouth, 2010, 397 p.
Si l'on parle souvent de Beyrouth comme du symbole d'une « ville en guerre » (et ce, même dans des expressions du langage courant), se focalisant principalement sur la période 1975-1990, il est moins courant de lire des ouvrages sur la ville d'avant-guerre. Pourtant, cette période est particulièrement passionnante, notamment pour comprendre les (...)

18:15
Arc2Earth: Arc2Cloud – Uploading Data
sur Planet Geospatial - http://planetgs.com

Arc2Cloud is our multi-tenant cloud solution for users who do not want to setup or maintain anything. You can get an Arc2Earth Cloud instance running on your own Google AppEngine account but for many of users, even this was too much overhead. You’ll still get your own logon, security and data configuration and enjoy all of the features of Arc2Earth Cloud, except now you can start instantly.

Typical Arc2Earth Cloud url on your own AppEngine Account: http://myInstance.appspot.com/a2e

With Arc2Cloud, you would use this instead: http://beta.arc2cloud.com/myInstance

Everything else about how you interact and build applications around the APIs is the same. The only major difference is the use of Google Fusion Tables as the datastore for all of your spatial and attribute data. If you plan on keeping your data public and have modest usage needs, Fusion Tables if free. If you need private data or much larger usage limits, you’ll need to get Premier access from Google.

Loading maps and data into Arc2Cloud is easy and for most users, it will take place directly from ArcMap. Simply select the layers in your map that you want to upload and click the upload button. In the background, Arc2Cloud will create Google Fusion Tables that exactly match your local layers (using OAuth to securely interact with Fusion Tables on your behalf). Once complete, an Arc2Cloud datasource that points at the newly created table is registered in your instance and finally, the data is batch uploaded to the table. By breaking this process up into batches, we can upload much larger quantities of data to FT.

Once uploaded, you’ll be able to interact with the Map via the built-in and external viewers. There will be a future post on the Google Earth viewer but as a preview, it contains full auto-complete search, editing and automatic KML regions for all of your data (no configuration, no static exports).

Your map is also available as a set of ESRI REST services as well (using the GeoServices REST spec). You can then use the excellent ESRI apps and APIs to build customer applicaitons or to tie your data into existing ESRI based ones. The maps are read/write (given proper credentials) so you can collect data online and your Fusion Tables will be automatically populated.

Another powerful feature is the ability to import Map schema and data from other online sources.

ArcGIS Server REST importer – Will import a MapServer or FeatureServer and create Fusion Tables for all layers. If it’s a FeatureServer, the renderer, labeling and feature template information is imported as well. (note – you should only import public services where there is no copyright infringement, we’ll likely build a bunch of free templates for different types of services)

Fusion Tables – Simply registers an existing Fusion Table (your own or one that is publically available). The table must have a Location field and while Arc2Cloud does not care about mixed geometry types, many other services that will try to interact with your table via Arc2Cloud will expect tables to have uniform geometries (e.g. all points or all polygons)

Twitter – This importer is not currently available (we are waiting on some cool new features in Google AppEngine to become available) however when ready, it will be a continuous importer. that is, you tell it a search query, an optional location and a time period and it will monitor the main twitter feed on your behalf, writing geo enabled tweets to a specifc Fusion Table.

There’s also the base API for Arc2Cloud, where you can create maps, datasources and features on the fly and FusionTables will be created in the background. This is great for ad-hoc applications where you don’t know what needs to be collected until the time comes.
17:42
James Fee GIS Blog: LBS and Fusion Tables and Vector Tiling, Oh My!
sur Planet Geospatial - http://planetgs.com
Another week has passed and we are all still alive and kicking. Humanity never fails to surprise me. Anyway, Geo ¹ continues to roll on and keep us excited.
- Skyhook Wireless and Sony are hooking up to give the next generation PSP some location capabilities. Good news for Skyhook, but aren’t devices like the PSP and Nintendo DS on their way out? I guess we’ll see this summer when everyone is playing the latest EA games on their iOS devices.
- Work with R? Check out RStudio! IDEs are usually hit and miss with me but this has enough awesome to warrant a download. (HT: PHXGeo)
- Protected Maps in Google Fusion Tables? Yes please! 2011 may be the year of Google Fusion Tables ²
- Google Maps labels look better, but why? Justin again analyses how Google does this and compares it to Bing and Yahoo!. I’ve said it before and I’ll say it again, you’ve got to be following Justin’s blog!
- IBM puts out a weird blog series on the “The Case Against Google Maps in IBM Cognos Reports” (parts two and three). To me I’m left wondering where the content is on that case to use Esri map services. They sum it up this way, “In solid Boolean logic: NOT Cognos BI AND Google Maps.” Say whaaat?
- Lastly, Matt Kenny brings us the awesome that is TileStache. Seriously now, why are we still using WxS and Esri ArcGIS Services? ³. Read Matt’s blog and get cracking. Bonus points for rolling TileMill and TileStache together!
Notes:
1. That is “Geo” with a big “G” vs “geo” with a little “g”. ↩
2. oh and the iPad 2, right? ↩
3. Sure, you can give me thousands of edge cases where such overhead is needed, but rarely does one need such things. We need to break out of our bad practices and embrace the future. ↩

17:42
LBS and Fusion Tables and Vector Tiling, Oh My!
sur James Fee GIS Blog
Another week has passed and we are all still alive and kicking. Humanity never fails to surprise me. Anyway, Geo ¹ continues to roll on and keep us excited.
- Skyhook Wireless and Sony are hooking up to give the next generation PSP some location capabilities. Good news for Skyhook, but aren’t devices like the PSP and Nintendo DS on their way out? I guess we’ll see this summer when everyone is playing the latest EA games on their iOS devices.
- Work with R? Check out RStudio! IDEs are usually hit and miss with me but this has enough awesome to warrant a download. (HT: PHXGeo)
- Protected Maps in Google Fusion Tables? Yes please! 2011 may be the year of Google Fusion Tables ²
- Google Maps labels look better, but why? Justin again analyses how Google does this and compares it to Bing and Yahoo!. I’ve said it before and I’ll say it again, you’ve got to be following Justin’s blog!
- IBM puts out a weird blog series on the “The Case Against Google Maps in IBM Cognos Reports” (parts two and three). To me I’m left wondering where the content is on that case to use Esri map services. They sum it up this way, “In solid Boolean logic: NOT Cognos BI AND Google Maps.” Say whaaat?
- Lastly, Matt Kenny brings us the awesome that is TileStache. Seriously now, why are we still using WxS and Esri ArcGIS Services? ³. Read Matt’s blog and get cracking. Bonus points for rolling TileMill and TileStache together!
Notes:
1. That is “Geo” with a big “G” vs “geo” with a little “g”. ↩
2. oh and the iPad 2, right? ↩
3. Sure, you can give me thousands of edge cases where such overhead is needed, but rarely does one need such things. We need to break out of our bad practices and embrace the future. ↩

16:53
GeoData Policy: Google Earth and the Middle East | Ogle Earth
sur Planet Geospatial - http://planetgs.com

Google Earth and the Middle East Posted on 2011/03/03 by Stefan Geens, Ogle Earth The Middle East is where Google Earth has perhaps had the deepest geopolitical impact since its introduction in June 2005. In these 5+ years, the wide availability of high resolution imagery of the region to anyone with an internet connection has [...]
16:40
AnyGeo - GIS, Maps, LBS, Geo and Social Location Technology: Geo Cloud and hosted solutions
sur Planet Geospatial - http://planetgs.com

Geo Cloud and cloud hosted solutions… there’s a number of solutions popping up in this hot space. Here’s a few solution providers for you to check out if your thinking “Cloud” and hosted solutions.

theGISmarketplace.com provides users with a one-stop shopping experience to search for, evaluate, and purchase hosted solutions from many leading GIS vendors. From [...]
15:45
Spatial Sustain: NASA’s Glory Satellite Fails to Reach Orbit
sur Planet Geospatial - http://planetgs.com

In the second consecutive devastating loss of a climate observation satellite, NASA’s launch early this morning of the Glory satellite failed to reach orbit and crashed into the ocean. Reports of the launch aboard a Taurus XL rocket from Vanedenberg Air Force Base in California indicate that the protective fairing did not separate as expected. [...]
15:41
Vector One: How Do Agro-ecological Farming Practices Link With GIS?
sur Planet Geospatial - http://planetgs.com

In the ‘Perspectives’ column this week— “How Do Agro-ecological Farming Practices Link With GIS?” Agro-Ecological farming practices are in the spotlight as food prices rise and new opportunities in agricultural production are evaluated. Sustainable agricultural production takes into consideration economic, environment and social factors – food production as a system. Geographic information systems (GIS) [...]
15:17
This Is Just The Start – NYTimes.com
sur Planet Geospatial - http://planetgs.com

This is Just a Start By Thomas Friedman, Op-Ed Columnist, New York Times, March 1, 2011 Future historians will long puzzle over how the self-immolation of a Tunisian street vendor, Mohamed Bouazizi, in protest over the confiscation of his fruit stand, managed to trigger popular uprisings across the Arab/Muslim world. We know the big causes [...]

15:15
The Environmental Impact of Gas Extraction
sur Google Maps Mania

Fractracker DataTool

Fractracker is a web-based data tool for tracking and visualizing data related to gas extraction in the Marcellus Shale region in the north-eastern U.S.. Using the tool it is possible to upload and visualise a number of data sets related to the Marcellus Shale region and the extraction of gas. Fractracker says to think of it as the 'Google Maps for gas extraction impacts'.

Using Fractracker it is possible to visualise the uploaded data sets on top of Google Maps. Fractraker is a great resource and tool for anyone interested in the environmental impact of gas extraction. The site already has a huge number of Google Map visualisations of the uploaded data. Here are just a couple:

Snapshot of Shale Plays in the U.S.
Shale Plays are geographic areas which have been targeted for exploration due to favorable geoseismic survey results for oil or gas. This Google Map shows the areas currently seen as Shale Plays in the United States.

Thickness of the Marcellus Shale in Pennsylvania

A Google Map showing the thickness of the Marcellus Shale formation in Pennsylvania. The dataset shows the thickness in feet of the Marcellus Shale formation in Pennsylvania based on data released by Piotrowski and Harper, 1979.

________________

15:14
Slashgeo.org: New Poll on Tablets and Geospatial, Results on Year 2011 Poll
sur Planet Geospatial - http://planetgs.com
We offer you a new poll on tablets and geospatial.

The previous poll asked our users about what 2011 in geospatial will be. I find the results pretty interesting. We have quite a bunch of optimists, with 23% believing geospatial will continue to explode and 26% saying it will grow steadily. An additional 5% even claim there will be new major products and services announced this year.

To my surprise, 18% believed 2011 will be the year of open data and OpenStreetMap, and another 10% say 2011 will be the year of open source geospatial software.

On the other end, we have 6% saying spatial is not special anymore and 10% anticipating that spatial will vanish by being integrated into everything else.
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15:12
The Map Room: Woodward’s Wisconsin Map and the Shaded Relief Archive
sur Planet Geospatial - http://planetgs.com

Via Daniel Huffman comes word that David Woodward's relief map of Wisconsin, first published in 1971, is now available for download on the Shaded Relief Archive. The archive, the brainchild of Tom Patterson, who previously gave us the Shaded...
15:06
The Map Room: FAA Allows iPad as Alternative to Aviation Charts
sur Planet Geospatial - http://planetgs.com

Paper maps have been replaced by their digital equivalents in many fields, but the idea that paper aviation charts could be replaced by an app running on an iPad is something new. Wired: "The Federal Aviation Administration is allowing charter...
15:01
Slashgeo.org: Tablets (e.g. iPad, Xoom) and geospatial?
sur Planet Geospatial - http://planetgs.com
Not useful to me Could potentially be useful but don't have one Yes! It really helps me get work done I love them, but not specifically for geospatial Couldn't live without it Not enough geo-related apps yet Tablets are useless gadgets Share this post on:
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14:44
Geoff Zeiss: China's 12th Five Year Plan Expected to Focus on Reducing Carbon Intensity
sur Planet OSGeo

The Chinese National People's Congress begins meeting tomorrow to pass the 12th five year plan. One of the policy items that is a priority for the five year plan is new energy efficiency and pollution reduction targets intended to put China on a less carbon-intensive economic development track. How seriously this will taken by Chinese industry will depend on China's Environmental Protection Law, first passed in 1979 and revised in 1989, which is notoriously weak in enforcement measures.

Since 1990, energy consumption as a share of total world energy use has increased significantly in both China and India, and together they accounted for about 10 percent of the world's total energy consumption in 1990 and 20 percent in 2007. According to the US Energy Information Administration (EIA) reference case projection, which assumes no new legislation, it is projected that strong economic growth in both countries will continue and their combined energy use will more than double and will account for 30 percent of total world energy consumption in 2035, with China responsible for just under 25 percent. The U.S. share of world energy consumption is projected to fall from 21 percent in 2007 to 16 percent in 2035.

China exceeded the US in energy related carbon emssions in 2006, though per capita emissions in China is far below the US. One of the expected measures to be included in the 12th five year plan is reducing carbon intensity. According to the 11th five year plan (2006-2010), China's per unit GDP energy consumption should have been reduced by 20 percent by the end of 2010 compared with 2005 levels. However, from 2006 to 2009, energy consumption per unit of GDP fell only 14.38 percent. It is expected that the five year plan will target reducing carbon intensity by 40 to 45 percent by 2020 compared to 2005 levels.

In 2005, China passed a law to promote renewable energy that aims to get a total of 500 gigawatts of renewable energy on the grid by 2020, including massive increases in wind power, biofuels, solar, and hydro power. In 2009 China and the EU led the world in clean energy investment. The total EU investment was $41.1 billion, China $34.6 billion, and the U.S. $18.6 billion. Over the past five years, China's clean energy investment has increased 148 percent, the U.S. significantly less, 103 percent.

14:38
Between the Poles: China’s 12th Five Year Plan Expected to Focus on Reducing Carbon Intensity
sur Planet Geospatial - http://planetgs.com

The Chinese National People's Congress begins meeting tomorrow to pass the 12th five year plan. One of the policy items that is a priority for the five year plan is new energy efficiency and pollution reduction targets intended to put China on a less carbon-intensive economic development track. How seriously this will taken by Chinese industry will depend on China's Environmental Protection Law, first passed in 1979 and revised in 1989, which is notoriously weak in enforcement measures.

Since 1990, energy consumption as a share of total world energy use has increased significantly in both China and India, and together they accounted for about 10 percent of the world's total energy consumption in 1990 and 20 percent in 2007. According to the US Energy Information Administration (EIA) reference case projection, which assumes no new legislation, it is projected that strong economic growth in both countries will continue and their combined energy use will more than double and will account for 30 percent of total world energy consumption in 2035, with China responsible for just under 25 percent. The U.S. share of world energy consumption is projected to fall from 21 percent in 2007 to 16 percent in 2035.

China exceeded the US in energy related carbon emssions in 2006, though per capita emissions in China is far below the US. One of the expected measures to be included in the 12th five year plan is reducing carbon intensity. According to the 11th five year plan (2006-2010), China's per unit GDP energy consumption should have been reduced by 20 percent by the end of 2010 compared with 2005 levels. However, from 2006 to 2009, energy consumption per unit of GDP fell only 14.38 percent. It is expected that the five year plan will target reducing carbon intensity by 40 to 45 percent by 2020 compared to 2005 levels.

In 2005, China passed a law to promote renewable energy that aims to get a total of 500 gigawatts of renewable energy on the grid by 2020, including massive increases in wind power, biofuels, solar, and hydro power. In 2009 China and the EU led the world in clean energy investment. The total EU investment was $41.1 billion, China $34.6 billion, and the U.S. $18.6 billion. Over the past five years, China's clean energy investment has increased 148 percent, the U.S. significantly less, 103 percent.
14:18
Laser Scanning Meets CAD and GIS
sur Planet Geospatial - http://planetgs.com

Laser Scanning Meets CAD and GIS Continue reading →

Click Title to Continue Reading...

13:42
Daniel Morissette: OSGeo Montreal Code Sprint seeking more sponsors due to record participation
sur Planet OSGeo
Update 1 (2011-03-04): Tydac just signed up for a 750$ sponsorship. Thank you for your support!
Update 2 (2011-03-07): I am glad to announce two more 750$ sponsors: Applied Imagery and Neogeo Technologies! Thanks!

The Montreal Code Sprint of March 15-18, 2011 has reached a record of 29 registered participants from 9 open source projects as of yesterday. This is awesome news for OSGeo and its projects that will get a significant boost of code and contributions during that week!

The downside of this is that our initial budget was for ~20 participants, and with close to 50% more sprinters we need to adjust the budget accordingly and are turning to you to help us find more sponsors to balance the new budget.

CALL FOR NEW SPONSORS - An investment in the technology that you use!

We are looking for another round of sponsors ($750 each) to support food and fun for the sprinters as they work hard and play hard for four productive days. Each $750 sponsorship will be put towards lunch, snacks and dinner costs for the sprinters, and any surplus at the end of the event will be turned over to OSGeo or used for a future code sprint.

If your organization is using one of the software projects listed below, then please consider this call for sponsorship as an investment in the technology that you use and contact me at dmorissette@mapgears.com to confirm your sponsorship. In addition to visibility in our public announcements you will get recognition for your contribution from the developers and from the OSGeo community.

Please also keep in mind that all the participants are volunteering several days of their time in addition to paying for their own travel and hotel expenses.

More information about this event is available here. The Open Source projects currently represented are:
Thank you once again to our current sponsors:
750$ Sponsors

Hockey Night Sponsor Host (Room and Internet)

Please do not hesitate to forward this announcement in your respective channels.

13:35
OSGeo Montreal Code Sprint seeking more sponsors due to record participation
sur Planet Geospatial - http://planetgs.com
The Montreal Code Sprint of March 15-18, 2011 has reached a record of 29 registered participants from 9 open source projects as of yesterday. This is awesome news for OSGeo and its projects that will get a significant boost of code and contributions during that week!

The downside of this is that our initial budget was for ~20 participants, and with close to 50% more sprinters we need to adjust the budget accordingly and are turning to you to help us find more sponsors to balance the new budget.

CALL FOR NEW SPONSORS – An investment in the technology that you use!

We are looking for another round of sponsors ($750 each) to support food and fun for the sprinters as they work hard and play hard for four productive days. Each $750 sponsorship will be put towards lunch, snacks and dinner costs for the sprinters, and any surplus at the end of the event will be turned over to OSGeo or used for a future code sprint.

If your organization is using one of the software projects listed below, then please consider this call for sponsorship as an investment in the technology that you use and contact me at dmorissette@mapgears.com to confirm your sponsorship. In addition to visibility in our public announcements you will get recognition for your contribution from the developers and from the OSGeo community.

Please also keep in mind that all the participants are volunteering several days of their time in addition to paying for their own travel and hotel expenses.

More information about this event is available here. The Open Source projects currently represented are:
- MapServer
- GDAL/OGR
- PostGIS
- libLAS
- ZOO Project
- TinyOWS
- GeoPrisma
- OpenLayers
- GeoExt.
Thank you once again to our current sponsors:

750$ Sponsors

Hockey Night Sponsor Host (Room and Internet)

Please do not hesitate to forward this announcement in your respective channels.
13:35
Geo Gears, Nuts & Bolts: OSGeo Montreal Code Sprint seeking more sponsors due to record participation
sur Planet Geospatial - http://planetgs.com
The Montreal Code Sprint of March 15-18, 2011 has reached a record of 29 registered participants from 9 open source projects as of yesterday. This is awesome news for OSGeo and its projects that will get a significant boost of code and contributions during that week!

The downside of this is that our initial budget was for ~20 participants, and with close to 50% more sprinters we need to adjust the budget accordingly and are turning to you to help us find more sponsors to balance the new budget.

CALL FOR NEW SPONSORS - An investment in the technology that you use!

We are looking for another round of sponsors ($750 each) to support food and fun for the sprinters as they work hard and play hard for four productive days. Each $750 sponsorship will be put towards lunch, snacks and dinner costs for the sprinters, and any surplus at the end of the event will be turned over to OSGeo or used for a future code sprint.

If your organization is using one of the software projects listed below, then please consider this call for sponsorship as an investment in the technology that you use and contact me at dmorissette@mapgears.com to confirm your sponsorship. In addition to visibility in our public announcements you will get recognition for your contribution from the developers and from the OSGeo community.

Please also keep in mind that all the participants are volunteering several days of their time in addition to paying for their own travel and hotel expenses.

More information about this event is available here. The Open Source projects currently represented are:
Thank you once again to our current sponsors:
750$ Sponsors

Hockey Night Sponsor Host (Room and Internet)

Please do not hesitate to forward this announcement in your respective channels.
Update 2011-03-04@15:00: Tydac just signed up for a 750$ sponsorship. Thank you for your support!
13:29
got geoint?: Friday’s Food for Thought: Breaking It Down ‘Old School’ Spying Style
sur Planet Geospatial - http://planetgs.com

Welcome to the Friday’s Food for Thought post from got geoint? Yesterday, we ran one of our most popular posts about how, way back in the day, spy satellites dropped exposed film via a parachute. Since that post caught on like wildfire, we thought this week’s FFFT post can be all about spy history. Our dedicated readers and members of the “FFFT fan club” may recall our GEOINT history post last year, which focused more on geographic history. For this post, we are trying to dive a bit deeper and expose some interesting, bizarre and entertaining facts about the history of spying. We hope you enjoy! Oh, and for all you hip, young GEOINTers, just a reminder that March 17 is the deadline to apply to be on the USGIF Young Professionals Group (YPG) Board of Directors. Click here for more information and don’t miss out on this opportunity.

SPYING: The Secret History of History
Everyone, at some time in his or her life, fantasizes about being a spy — James Bond, Mata Hari, George Smiley, Maxwell Smart. At the new International Spy Museum in Washington, D.C., more than a million visitors have stepped into the secret history of history–and have learned what it is really like to live undercover. This distinctive and fascinating book at once distills and expands upon that experience, with inside information on how spies do their jobs, interviews with operatives, and hundreds of photographs and descriptions of tools of the trade. Biographies of legendary spies and how they completed their special operations are included, along with timelines showing the developments of bugs, surveillance tools, weapons, and disguises. Letters, maps, examples of disguises, dead drops, and rare photos make spies and their operations from 2000 BC to the present live and breathe on every page. Interesting, right? You can purchase the book here.

History of the Intelligence Community: A Google Timeline
Perhaps we are a bit ‘old school’ ourselves, but we just stumbled upon a Google timeline on the history of the Intelligence Community. Did you all know that Google did this? Yeah, neither did we. Basically, Google will pull content from different books and sources to create the timeline. Yeah, very cool. What can’t Google do? Or, right, we already covered that one in a FFFT post. And, in the meantime, be sure to check out the Google-facilitated timeline of the history of the Intelligence Community here.

15 of History’s Most Notable Spies
A career in espionage is easily one of the most coveted of all childhood fantasies, due largely to the unending stream of spy movies, comics, books, and real-life stories we’re inundated with growing up. While James Bond is at the top of everyone’s list, in reality things can be a bit different; spies come in all shapes and sizes, and range from honorable to just plain criminal. Some are remembered for their daring and others for their half-witted desperation and lust for money, but one thing rides certain throughout the disparate stories they tell: It takes guts to be a spy. While the greatest spies will, by virtue of their success, never be known to us, these are the 15 most notable spies in our recent history. Regardless of their final motives or original intent, they’ve all earned their own version of immortality by contributing to our unending fascination with the shadowy world they’ve walked. Check out more here.

NOVA: Spy Photos
Surveillance images taken by spy planes and satellites have been used to sway public opinion ever since President John F. Kennedy declassified U-2 images of Russian nuclear missiles in Cuba four decades ago. Since then, the release of such photographs—sometimes officially sanctioned, sometimes not—has played a crucial role in geopolitics, never more intensely than in recent years. In this interactive satellite map of the world, examine a series of influential images released between 1962 and 2005. Check out more from NOVA here.

Curriculum: Students Examine The History of Spying
Students will examine the history of spying from the time of the Cold War to the present. Point out to students that espionage, the practice of using of spies to obtain military or political secrets, has played an important role in military affairs throughout history. Next, group students, and have each group consult the Internet and other resources to learn about the history of spying from the time of the Cold War to the present. Have students identify the technological advances that have helped spies to do their jobs. In addition, have students note the different conflicts between the U.S. and other countries during this time. After students complete their research, reconvene groups, and have them create a timeline that depicts their findings. Wrap up the activity by posing the following questions for class discussion. See…this is a mini-curriculum on how to teach the history of spying to students. Check out more here.

Old School Hip Hop with Grandmaster Flash
The early days of hip hop and break dancing was an amazing time. In the late 1970s and early 1980s, we were on the verge of cutting-edge cultural revolution coming directly from the heart and soul of the streets. Way back in the day, even though many of us were young at the time, we knew something big was brewing. And once “Rapper’s Delight” made it’s way through suburbia, the new cultural revolution had officially taken hold. Check out this video of Grandmaster Flash that will bring you back to those early days.
13:25
Spatial Sustain: Spatial Networks Works with Locals to Map Afghanistan
sur Planet Geospatial - http://planetgs.com

Spatial Networks has been working for some time to map Afghanistan with local GIS and geospatial technology experts along with the national mapping agency. The project scope is ambitious, with plans to completely map the entire country (650,000+ sq km) at 1:25,000 and all the provincial capitals and urban centers at 1:5,000. To date, 120,000 [...]
13:16
All Points Blog: LightSquared Update 3/4/11
sur Planet Geospatial - http://planetgs.com

MetroPC is looking to perhaps partner with LightSquared's for its LTE network - if everything works out. - Fierce Wireless "Harbinger Capital Partners, the venture capital firm backing LightSquared, is bidding on bankrupt satellite company DBSD together with Solus Alternative Asset...

13:16
LightSquared Update 3/4/11
sur All Points Blog

MetroPC is looking to perhaps partner with LightSquared's for its LTE network - if everything works out. - Fierce Wireless "Harbinger Capital Partners, the venture capital firm backing LightSquared, is bidding on bankrupt satellite company DBSD together with Solus Alternative Asset...

13:15
The Map Room: Driver Stranded Three Days in Snow After Obeying GPS
sur Planet Geospatial - http://planetgs.com

A driver got stuck in the snow for three days because she followed her GPS navigation unit's directions, which sent her along unpaved logging roads in New Brunswick that were impassable due to snow. New Brunswick is one of those...
13:00
Spatial Sustain: IBM Wins Intelligent Infrastructure Contracts for Water Management
sur Planet Geospatial - http://planetgs.com

This week IBM held their Pulse conference in Las Vegas to focus on intelligent infrastructure. In conjunction with the event, the company announced three cities that will be using their sensor and software combination for water system management and maintenance. The solution combines sensors with IBM’s Maximo Spatial software and Esri’s GIS software. Washington, D.C. [...]

12:50
Revue de presse de la semaine
sur Geotribu

Cette revue de presse est digne des plus grands studio de cinéma hollywoodien. La remise des oscars et des césars vient de se terminer et nous avons décidé nous aussi d'organiser notre propre festival en sélectionnant les vidéos et animations que nous avons aimé. Alors prenez place, installez-vous bien la séance commence.

en lire plus

12:49
Spatial Law and Policy: Government’s Use of Tracking Technology: More Than A Constitutional Issue?
sur Planet Geospatial - http://planetgs.com

I have written in the past about a series of recent court cases in the United States involving the Fourth Amendment and a reasonable expectation of privacy from a location standpoint. The cases have either involved (i) law enforcements' use of GPS tracking devices to follow potential suspects for long periods of time (see e.g. this article from the Berkley Technology Law Journal) or (ii) efforts by law enforcement to obtain location data of mobile phones from telecommunications carriers (see e.g. this decision) -without a warrant.
From a legal standpoint these cases raise some very difficult and important issues regarding both the Fourth Amendment and the clearly outdated Electronic Communications Privacy Act (ECPA). I will not go into the details of either here, other than to say that courts are split in both types of cases as to whether a warrant is required before location data is collected or obtained.
However, as equal importance as the legal analysis is that the public position of the Obama administration - through the Department of Justice - in each federal case appears to have been that a warrant is not required. Their argument is that an individual does not have a reasonable expectation of privacy while in public places. (I believe without further research that this policy is consistent with all other administrations that have faced this issue.) Now, while this position is justifiable from a legal standpoint given U.S. case law, I have been increasingly concerned about the potential foreign policy and national security implications of such a position. Specifically, I wonder whether in the future the United States will be in a position to condemn what will undoubtedly be increased use of such tracking technology by authoritative regimes to suppress democratic movements - such as those we have seen recently in the Middle East.
Enhancements in sensor and software are making it relatively easy for governments to track dissidents in near real time. It also is increasingly possible to identify their likely friends, families and associates through their respective public movements. In addition, governments will be able to see as individuals begin to meet in central locations and take preventative steps before the crowd gets too big and difficult to control.
Undoubtedly, some of this technology is being already being used on a smaller scale, both in the United States and in countries around the world. However, China recently announced an official effort to begin using location information from mobile phones to track citizens' movements on a broad scale. The stated reason for the policy reportedly is to help with traffic problems. As many publications have already reported (see e.g. NYT article , Mobiledia report and Frontline) however, the potential for use (or misuse) is much broader.
The problem, as I see it, is that as the technology is used openly by Chinese authorities - and others - to monitor and quell dissent, it will be very difficult for the the United States to challenge such use privately or in the court of public opinion. After all, it has gone on record as saying that individuals do not have a reasonable expectation of privacy when in public under the U.S. Constitution. What right will it have to challenge another government taking basically the same position?
I certainly understand and appreciate the need for law enforcement (and homeland security) to use all the tools at their disposal to execute their mission. As I stated above, I also understand the legal position taken by the Justice Department attorneys in these cases. In addition, as this article points out, there are a number of other important reasons why government authorities want to obtain an individual's location as quickly and accurately as possible without having to obtain a warrant.
However, I hope that those within U.S. government responsible for foreign policy are looking at the bigger picture when it comes to tracking technology, much as they have done with respect to the role of the Internet to foster democratic values. I also hope that the Central Intelligence Agency and Department of Defense are assessing the potential impact the technology will have on collection efforts and covert operations. In developing U.S. policy regarding the use of tracking technology, it is important to consider that as effective as it is for protecting U.S. citizens at home, it may even be used more effectively to harm US interest by foreign governments not limited by our system's check and balances.

12:08
[Parcell'air] Cadastre : La fiche de métadonnées de la DGFiP
sur GeoRezo.net - Géoblogs
Le bureau GF-3A de la DGFip a Bercy vient de communiquer à la plate-forme régionale GeoBretagne un modèle type de fiche de métadonnées pour décrire le plan cadastral vecteur.

Cette fiche au format XML "INSPIRO-compatible" est accessible via ce lien, .

On y trouve notamment ces chapitres de définitions et d'informations, qui devraient être connues de tous les géomaticiens ou utilisateurs assidus ou occasionnels du cadastre :
Résumé : (balise <gmd:abstract>)

Le plan cadastral est un document administratif qui propose l’unique plan parcellaire à grande échelle couvrant le territoire national.
Le plan cadastral d’une commune est découpé en sections, elles-mêmes pouvant être découpées en subdivisions de sections, communément appelées « feuilles de plan ». La section cadastrale est une portion du territoire communal dont le périmètre est généralement constitué par des limites présentant un caractère relativement stable sur le terrain (route, chemins, cours d’eau…).
La parcelle est l’unité cadastrale de base. C’est un terrain d’un seul tenant situé dans un même lieudit et appartenant à un même propriétaire.

Le plan cadastral au format vecteur est issu majoritairement de numérisation du plan cadastral papier ou raster réalisée dans le cadre de conventions avec les collectivités territoriales. Dans une moindre mesure, il a été confectionné directement au format numérique dans le cadre de la production de plans cadastraux neufs (procédure du remaniement prévue par la loi n° 78-645 du 18 juillet 1974) ou d’aménagements fonciers agricoles et forestiers (communément désignés sous le terme « remembrements »). Les plans cadastraux au format vecteur en France métropolitaine sont actuellement géoréférencés dans le système légal (RGF93) à l’aide des projections « coniques conformes 9 zones ».

Le géoréférencement des plans vecteur a pu être obtenu :
- lors de leur confection (cas des plans cadastraux très récents) ;
- après transformation de leurs coordonnées exprimées dans la projection Lambert zones ;
- lors de leur vectorisation (cas des plans non initialement géoréférencés)
But : (balise <gmd:purpose>)

Le but premier du plan cadastral est d'identifier, de localiser et représenter la propriété foncière, ainsi que de servir à l'assise de la fiscalité locale des propriétés non bâties.

Par suite, l’article 110 de la loi n° 2009-526 du 12 mai 2009, abrogé et recodifié par l'Ordonnance n° 2010-1232 du 21 octobre 2010 à l'article L127-10 -I du Code de l'environnement dispose qu'en matière de découpage parcellaire et de représentation du bâti, le plan cadastral est la donnée de référence.

Etat : ((balise <gmd:statement>)

Les plans cadastraux au format vecteur gérés et exportés par les services de la DGFiP ont été confectionnées à partir de levers terrain. Selon les feuilles de plan, les conditions de vectorisation et de géoréférencement sont diverses. Ces informations sont disponibles sur les fiches de chacune des communes.

Les plans cadastraux sont de plusieurs types :
- plans dits « mis à jour » : ce sont des plans cadastraux mis à jour à partir de la trame des plans cadastraux napoléoniens. Ce ne sont pas des plans réguliers. Ces feuilles de plan sont identifiables par leur section à lettre unique (par exemple « section A »). Les échelles des feuilles de plan peuvent être variables et sont principalement aux échelles suivantes : 1/1250, 1/2500 et 1/5000 ;
- plans dits « réguliers » : ce sont des plans qui ont été confectionnés lors de la rénovation du cadastre sans reprendre la trame des plans napoléoniens.
Parmi ces plans, l’on distingue deux catégories :
- les plans dits « renouvelés » : ce sont des plans qui n’ont pas fait l’objet lors de leur confection d’une délimitation contradictoire des propriétés sur le terrain ;
- les plans « refaits » qui ont quant à eux fait l’objet d’une délimitation contradictoire des propriétés ; Lorsque le plan cadastral n’est plus en mesure de répondre aux besoins (notamment en raison de son échelle ou de son imprécision éventuelle), il peut être refait selon la procédure du « remaniement » prévue par la loi n° 78-645 du 18 juillet 1974.
Les plans cadastraux résultant d’opérations d’aménagements fonciers sont appelés « plans remembrés ».

L’identifiant d’une feuille de plan est de la forme : « DDCCCPPPSSNN » où :
- « DD » est le numéro du département ; - « CCC » le code INSEE de la commune ;
- « PPP » le préfixe de section. Par défaut ce préfixe est égale à « 000 » sauf dans les cas suivants :
  - en cas d’absorption de commune, ce préfixe a pour valeur le code INSEE de la commune absorbée;
  - en cas de communes à arrondissements, ce préfixe contient le code de l’arrondissement (pour Paris de 101 à 120, pour Lyon de 381 à 389, pour Marseille de 201 à 216, dans le cas de la ville de Toulouse il s’agit du code de quartier prenant les valeurs de 801 à 846)
- « SS » est la désignation de la section « cadastrale » (en cas de lettre de section unique, la lettre de section est précédée du chiffre « 0 » par exemple « section 0A ») ;
- « NN » est le numéro de la feuille (« 01 » par défaut)
Ces définitions ou informations ont maintes fois été reprises, expliquées ou détaillées dans les forums ou dans le wiki d GeoRezo. Elles figurent également dans le guide MAJIC II. Mais ces informations générales ont le mérite d'avoir été "prélevées à la source"...

Quant à la saisie de ces métadonnées, la DGFiP va-t-elle rédiger les 600 000 fiches (à quelques milliers près) correspondant à chacune des feuilles cadastrales gérées par ses services, ou plus prosaïquement 1 fiche par commune (36 000) ?

La logique et la rigueur imposerait plutôt la première solution : cruel avenir pour les géomaticiens à Bercy !

12:08
Cadastre : La fiche de métadonnées de la DGFiP
sur Parcell'air
Le bureau GF-3A de la DGFip a Bercy vient de communiquer à la plate-forme régionale GeoBretagne un modèle type de fiche de métadonnées pour décrire le plan cadastral vecteur.

Cette fiche au format XML « INSPIRO-compatible » est accessible via ce lien, .

On y trouve notamment ces chapitres de définitions et d’informations, qui devraient être connues de tous les géomaticiens ou utilisateurs assidus ou occasionnels du cadastre :
Résumé : (balise <gmd:abstract>)

Le plan cadastral est un document administratif qui propose l’unique plan parcellaire à grande échelle couvrant le territoire national.
Le plan cadastral d’une commune est découpé en sections, elles-mêmes pouvant être découpées en subdivisions de sections, communément appelées « feuilles de plan ». La section cadastrale est une portion du territoire communal dont le périmètre est généralement constitué par des limites présentant un caractère relativement stable sur le terrain (route, chemins, cours d’eau…).
La parcelle est l’unité cadastrale de base. C’est un terrain d’un seul tenant situé dans un même lieudit et appartenant à un même propriétaire.

Le plan cadastral au format vecteur est issu majoritairement de numérisation du plan cadastral papier ou raster réalisée dans le cadre de conventions avec les collectivités territoriales. Dans une moindre mesure, il a été confectionné directement au format numérique dans le cadre de la production de plans cadastraux neufs (procédure du remaniement prévue par la loi n° 78-645 du 18 juillet 1974) ou d’aménagements fonciers agricoles et forestiers (communément désignés sous le terme « remembrements »). Les plans cadastraux au format vecteur en France métropolitaine sont actuellement géoréférencés dans le système légal (RGF93) à l’aide des projections « coniques conformes 9 zones ».

Le géoréférencement des plans vecteur a pu être obtenu :
- lors de leur confection (cas des plans cadastraux très récents) ;
- après transformation de leurs coordonnées exprimées dans la projection Lambert zones ;
- lors de leur vectorisation (cas des plans non initialement géoréférencés)
But : (balise <gmd:purpose>)

Le but premier du plan cadastral est d’identifier, de localiser et représenter la propriété foncière, ainsi que de servir à l’assise de la fiscalité locale des propriétés non bâties.

Par suite, l’article 110 de la loi n° 2009-526 du 12 mai 2009, abrogé et recodifié par l’Ordonnance n° 2010-1232 du 21 octobre 2010 à l’article L127-10 -I du Code de l’environnement dispose qu’en matière de découpage parcellaire et de représentation du bâti, le plan cadastral est la donnée de référence.

Etat : ((balise <gmd:statement>)

Les plans cadastraux au format vecteur gérés et exportés par les services de la DGFiP ont été confectionnées à partir de levers terrain. Selon les feuilles de plan, les conditions de vectorisation et de géoréférencement sont diverses. Ces informations sont disponibles sur les fiches de chacune des communes.

Les plans cadastraux sont de plusieurs types :
- plans dits « mis à jour » : ce sont des plans cadastraux mis à jour à partir de la trame des plans cadastraux napoléoniens. Ce ne sont pas des plans réguliers. Ces feuilles de plan sont identifiables par leur section à lettre unique (par exemple « section A »). Les échelles des feuilles de plan peuvent être variables et sont principalement aux échelles suivantes : 1/1250, 1/2500 et 1/5000 ;
- plans dits « réguliers » : ce sont des plans qui ont été confectionnés lors de la rénovation du cadastre sans reprendre la trame des plans napoléoniens.
Parmi ces plans, l’on distingue deux catégories :
- les plans dits « renouvelés » : ce sont des plans qui n’ont pas fait l’objet lors de leur confection d’une délimitation contradictoire des propriétés sur le terrain ;
- les plans « refaits » qui ont quant à eux fait l’objet d’une délimitation contradictoire des propriétés ; Lorsque le plan cadastral n’est plus en mesure de répondre aux besoins (notamment en raison de son échelle ou de son imprécision éventuelle), il peut être refait selon la procédure du « remaniement » prévue par la loi n° 78-645 du 18 juillet 1974.
Les plans cadastraux résultant d’opérations d’aménagements fonciers sont appelés « plans remembrés ».

L’identifiant d’une feuille de plan est de la forme : « DDCCCPPPSSNN » où :
- « DD » est le numéro du département ; – « CCC » le code INSEE de la commune ;
- « PPP » le préfixe de section. Par défaut ce préfixe est égale à « 000 » sauf dans les cas suivants :
  - en cas d’absorption de commune, ce préfixe a pour valeur le code INSEE de la commune absorbée;
  - en cas de communes à arrondissements, ce préfixe contient le code de l’arrondissement (pour Paris de 101 à 120, pour Lyon de 381 à 389, pour Marseille de 201 à 216, dans le cas de la ville de Toulouse il s’agit du code de quartier prenant les valeurs de 801 à 846)
- « SS » est la désignation de la section « cadastrale » (en cas de lettre de section unique, la lettre de section est précédée du chiffre « 0 » par exemple « section 0A ») ;
- « NN » est le numéro de la feuille (« 01 » par défaut)
Ces définitions ou informations ont maintes fois été reprises, expliquées ou détaillées dans les forums ou dans le wiki d GeoRezo. Elles figurent également dans le guide MAJIC II. Mais ces informations générales ont le mérite d’avoir été « prélevées à la source »…

Quant à la saisie de ces métadonnées, la DGFiP va-t-elle rédiger les 600 000 fiches (à quelques milliers près) correspondant à chacune des feuilles cadastrales gérées par ses services, ou plus prosaïquement 1 fiche par commune (36 000) ?

La logique et la rigueur imposerait plutôt la première solution : cruel avenir pour les géomaticiens à Bercy !

11:50
Friday Fun with Google Maps
sur Google Maps Mania

Goldman Sachs Gets Reviewed

Some Google Maps reviews are more accurate than others.

Looking Into The Past Pictures

Historypin may have mastered the art of placing historical pictures on top of Google Maps Street View. Buzz Feed however have devised a more low-tech method of comparing historical photographs with the modern day.

This one has nothing to do with maps but I love these 75 shots of old photos manually placed over the same view today.

Isokron

Isokron are creating some great public transportation visualisations with Open Street Map. The video above shows the travel times in the French city of Rennes. It shows the travel times from the town hall in Rennes (using the subway and the bus) and how they evolve during a typical Monday.

If you want to see similar visualisations using Google Maps check out the magnificent Mapnificent

________________

9:38
MapTiler [Logiciel]
sur Silatitudes - Accueil

Voici un logiciel permettant la superposition d'une couche de type raster sur un fond de carte web. MapTiler utilise les librairies GDAL2Tiles afin de générer une pyramide de tuiles. Maptiler est un assistant permettant une publication web de données raster. Avec Maptiler, vous intégrez une image géoréférencée sur un fond de carte web en quelques minutes sans connaissance approfondie des API Google Maps ou OpenLayer.

6:51
Martin Davis: GeoGeeks presentation on Geometry Libraries
sur Planet OSGeo

Paul Ramsey has been doing his usual excellent work of promoting geo-geekery by setting up a Victoria GeoGeeks Meetup. Tonight I gave a presentation on Geometry Libraries for Fun and Profit.

I was intending to give it back-to-back with a presentation on JTS, to make the whole subject more concrete - but I rambled on for so long I was yanked from the stage before I could start on the second one! That's actually good, since it will give me time to polish up the presentation a bit more. In the meantime, the current slide deck is here: JTS - A Libary for Geometry Processing.

6:42
Lin.ear th.inking: GeoGeeks presentation on Geometry Libraries
sur Planet Geospatial - http://planetgs.com

Paul Ramsey has been doing his usual excellent work of promoting geo-geekery by setting up a Victoria GeoGeeks Meetup. Tonight I gave a presentation on Geometry Libraries for Fun and Profit.

I was intending to give it back-to-back with a presentation on JTS, to make the whole subject more concrete - but I rambled on for so long I was yanked from the stage before I could start on the second one! That's actually good, since it will give me time to polish up the presentation a bit more. In the meantime, the current slide deck is here: JTS - A Libary for Geometry Processing.
3:50
Spatial Sustain: Google and Microsoft Team up to Beat Back Geotag Patent Holder
sur Planet Geospatial - http://planetgs.com

Ars Technica reports, that the owner of a patent that provides a means to place store information on a map is finding resistance from both Google and Microsoft. Geotag, the current patent owner of a patent that was purchased for $119 million has sued more than 400 companies that utilize such functionality with both Google [...]

2:56
Jody Garnett: Foss4g 2011 seeing red
sur Planet OSGeo

I keep being tempted by FOSS4G 2011 (it is after all a great experience).

However the website this year has me seeing "red".

Or not.

As many others around the world I am red green colour blind; or as I like to think of it red does not do much for me. Seeing a girl in a red dress will leave me seeing the girl (which is how it should be).

To help with this I have a couple of pictures (no not of a girl). Note the technique of selecting the text in order to read it only works when the text is "text" (and not a picture).

And to help here is the same image in gray so you can git a feel for a reduced web palette.

Please continue with your regularly scheduled browsing experience.

And consider going to http://2011.foss4g.org/

2:27
AnyGeo - GIS, Maps, LBS, Geo and Social Location Technology: City of Grand Forks GIS web map and Open Data Warehouse
sur Planet Geospatial - http://planetgs.com

This via Adam R. Jonasson GIS Coordinator City of Grand Forks, ND details of a new web service and open data warehouse. This new map has many more layers, is cleaner, faster, and more up to date than our previous web map. Utilizing Autodesk MapGuide Enterprise and Websoft Developer’s Facilities Map, the new [...]
1:53
Moscow Metro Maps
sur Planet Geospatial - http://planetgs.com

A collection of maps of the Moscow metro is so extensive that it must have all of them. (Above, one from 1935; they go as far back as 1931, and there are nine from 2010.) In Russian. Via @spatialanalysis....
1:47
The Map Room: ‘How I Was Saved by Maps’
sur Planet Geospatial - http://planetgs.com

A beautiful, personal piece by Daniel Huffman on how cartography helped him overcome depression. Here's an excerpt, but you should really read it all. I made a lot of maps during that period; it was one of the only activities...
1:45
Ogle Earth: Recent reads: Dutch-German border dispute, Israel Street View
sur Planet Geospatial - http://planetgs.com

Here are some interesting stories that have popped up on the radar screen these past few weeks:

Strange Maps (Mar 1): 504 – Bordering on Bizarre: Google Maps Fail in Dollart Bay
You’d be forgiven for thinking that border disputes are not something that neighboring European Union members get embroiled in. You’d be wrong: The Netherlands and Germany diverge on where the maritime border between them lies. One thing both sides agree on, however: The way Google Maps currently depicts the maritime border is wrong:

It gives the Netherlands all of the maritime territory in question, including the harbor of Emden, a German town. The error is only visible in Google Maps. Google Earth (sensibly?) doesn’t try to depict maritime borders. Emden city council, meanwhile, has been trying to alert Google for the past year, clearly without success.

Associated Press (Feb 21): Google Street View raises Israeli security fears
Jerusalem Post (Feb 20): In Israel Google Street View needs serious thought
As the Associated Press reports, Israel’s government would like for Google Street View to come to Israel, but first wants to work with Google to minimize security risks. The Jerusalem Posts column proposes how this collaboration might work, but the suggestions are a bit… bizarre?

Keeping the data in Israel is the only way to ensure the Israeli courts can order enforcement. This may be a good first step. Israel also has a responsibility to act in the Interests of its people and of the Jewish people more generally. In light of that, Israel may also request further unrelated guarantees from Google, such as an undertaking to cooperate more fully with the Ministry of Foreign Affairs in the fight against Antisemitism.

First, if Google had to keep the only copy of each country’s geospatial dataset in that country, there would be no Google Street View or Google Earth. The data resides in redundant server farms around the world. If Israel wants to have a legal grip on Google, I suggest looking in the Tel Aviv phone book for their offices.

Second, I’m sure that Google is against anti-semitism, as they are against racism and homophobia, but this is an issue wholly unrelated to Google Street View, as the JPost op-ed piece concedes. Then why connect them? Holding up regulatory approval in one matter until a company concedes on an unrelated matter is called being held to ransom.

ISIS Reports (Feb 23): Satellite Image Shows Suspected Uranium Conversion Plant in Syria
Remember that North-Korea designed nuclear reactor under construction in Syria which Israel bombed in September 2007? Germany’s Sueddeutsche Zeitung has now identified a further site that was related to the reactor, and whose purpose at the time Syria now seems to want to hide. ISIS has now commissioned imagery to further analyze this site.

Google Lat Long Blog (Feb 15): Act Locally in Sudan with New Imagery & Maps
Google releases new imagery for soon-to-be newly independent South Sudan, and urges the creation of local mapping communities in both Sudans.
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1:42
The Map Room: U.S. Migration Flows
sur Planet Geospatial - http://planetgs.com

Interactive maps of domestic migration in the United States from the Pew Research Center. "They show gains and losses only from people who move from one state to another, and not from births, deaths or movement to and from...

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