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Galerie d'images satellites. 1:10m Cultural Vectors. Kelso’s Corner. I prompted a flurry of PostGIS hate (and some love) on Twitter last week, documented via Storify.

Kelso’s Corner

I’ve been using PostGIS for around 2 years now both at Stamen and before that at The Washington Post. Let me say upfront that PostGIS is amazing and is definitely in the top 5 best FOSS4G (free and open source software for geo) out there. It is a super powerful spatial data store that is free to download, install, and use (even in commercial projects!). It’s can also be mind numbingly difficult to install and use. It doesn’t matter how awesome something is unless it’s usable. Besides the specific issues outlined below, PostGIS lacks basic functions required for spatial analysis found in ArcToolbox. @PostGIS asked me for details on how it could be friendlier and I’ve itemized around 20 below.

If a project that is considered core to the FOSS4G stack (eg Mapnik, PostGIS, etc), the project needs to act like it. Le site Histoire-Géographie de l'académie de Rouen. ASTER GDEM. How-to (Select tiles directly) Map can be scrolled and zoomed by cursor.

ASTER GDEM

Zooming is possible both by mouse and scale bar on the top of the map. When clicking [# Grid] button, tiles will appear. To select tiles, press [Start] button, and click tiles by cursor. When clicking [Clear] button or each selected tile twice, the selection is cleared. Données. Ressources pour les SIG - [la cordonnerie] Government data from around the world. Welcome to our single gateway.

Data, data, data.

Government data from around the world. Welcome to our single gateway

There's loads of it out there and more coming your way as governments open their statistics vaults around the world. First the US with data.gov, then Australia and New Zealand followed suit. Now it's the UK's turn with data.gov.uk. The Arthur H. Robinson Map Library at the University of Wisconsin-Madison. Download data by country. Select and download free geographic (GIS) data for any country in the world Sources Formats The files have been compressed and grouped in ZIP files.

Download data by country

You can use programs such as 7-zip, PKZIP or StuffIt to decompress the files. About GIS. As of July 1, 2013 ThinkQuest has been discontinued.

About GIS

We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Satelliteimages QL. GEOFABRIK Downloadbereich. | Administrative shapefiles contain boundaries of standard geographic locations in effect in 1998.

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The information contained in these files may have changed since their creation. You may find more current shapefiles for the United States from the U.S. Census Bureau. Data - GIS at University of Chicago. Some of these data sites are more specific by subject or by region than others.

Data - GIS at University of Chicago

However, it is suggested to first try the links under the “National and International Data” heading before going to more specific sites. The National and International sites are more generic in some instances and may have the data that you are trying to locate. When searching these sites, the keywords of “GIS” and the “subject” in question are usually good starting points if you are having difficulty. Sources of free orthoimagery - World Wind Wiki. From World Wind Wiki Below is a list of sites offering free orthoimagery of various locations.

Sources of free orthoimagery - World Wind Wiki

Note that most of the following do not offer the imagery up via WMS and is thus not easy (as yet) to incorporate into World Wind. [edit] Austria [edit] Burgenland [edit] Kärnten. Download free ArcGIS GIS shapefile maps Geospatial Data for Digital Cartography. Sponsors Page 1 of 4, Go To Next Page.

Download free ArcGIS GIS shapefile maps Geospatial Data for Digital Cartography

Download free Hurricane GIS Shapefile Map Layers. With hurrican Irene on its way.

Download free Hurricane GIS Shapefile Map Layers

I thought some of you may be interested in these historical hurricane shapefiles. These cover the period from 1851 up to 2004. I'm working also to include more recent hurricanes in the near future. The paths of tropical cyclones and major hurricanes from 1851 to 2004. The term "tropical cyclone" is a generic term for a low-pressure storm system that usually forms in the tropics. Download the free hurricane GIS shapefile map layers here Mike Meuser GIS Project Development, Data Research and Custom Shapefile CreationFree GIS Software, Shapefiles, Maps and TutorialsFree GPS, Aerial, TOPO Maps and News If you have data, GIS project or custom shapefile needs send me an email.

GIS Resources. CIESIN (Center for International Earth Science Information Network) Earth Institute, Columbia University Interdisciplinary research related to human interactions in the environment CIESIN hosts: Socioeconomic Data and Applications Center (SEDAC) SEDAC focuses on human interactions in the environment. Data set themes include agriculture, climate, conservation, hazards, health, infrastructure, land use, marine and coastal, population, poverty, remote sensing, sustainability, urban, and water.

Data Distribution Centre, Intergovernmental Panel on Climate Change Access to baseline and scenario data related to population, economic development, technology and natural resources for use in climate impact assessments. Primary Data Search. Downloads. Data themes are available in three levels of detail. For each scale, themes are listed on Cultural, Physical, and Raster category pages. Stay up to date! Know when a new version of Natural Earth is released by subscribing to our announcement list. Overwhelmed? EROS Find Data/Products and Data Available/gtopo30/hydro.

Aide:Cartographie/Ressources cartographiques géoréférencées. Une page de Wikipédia, l'encyclopédie libre. Cette page répertorie de façon non-exhaustive les outils, ressources et liens externes pour la création cartographique au sein de Wikipédia en utilisant des modèles numériques de terrain et plus généralement des données numériques géoréférencées. Ne sont donc pas mentionnés ici par exemple les sites proposant des cartes libres prêtes à l'emploi ou autres ressources permettant de tracer des cartes à main levée qui sont traités par d'autres pages d'aides cartographiques complémentaires à celle-ci.

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