GIS coaching for territorial management.
We have discussed in previous articles in depth how to access the allies’ cartography during WWII (1939-45) at the library of the University of Texas ( http://www.lib.utexas.edu/maps ). In this article we will discuss how to…
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How to communicate your work under QGis to work partners who do not have GIS tools? The most relevant option is as an html page searchable with any Internet browser. The QSGis2Web plugin provides an easy…
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To set the scene, here is an excerpt from the publication ” Surveyor n ° 2087 of December 2011 “: The file of the month Safety, reliability Underground networks by Laurent Polidori (director of ESGT)…
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In the previous article we discussed the SQL functions of spatial relationship . Let’s now discuss the SQL spatial processing functions. Let’s start with the difference between the notion of spatial relation and spatial treatment. The…
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Following the two introductory articles, The spatial analysis with SQL: 1-Introduction , 2-the preconceived misconceptions , we will discuss the ten Postgis spatial relational functions (that you will also find when using Spatialite). As previously stated,…
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In a previous article we have stated ( The analysis space with SQL: 1-Introduction ) that the most common idea is that SQL is a very good query tool on GIS tables but you must have…
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