GIS coaching for territorial management.
The QGIS Green View Index plugin is a powerful tool to measure the vegetation cover of a given area. It is interesting to see what it brings compared to the classical processing based on vertical aerial…
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The Green View Index for QGIS is a plugin that performs the three main procedures necessary to calculate the GVI for a given area: We are publishing a series of three articles: 1-Green View index concepts…
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The QGIS Green View Index plugin is a powerful tool for measuring the vegetation cover of a given area. It is easy to use and provides valuable information to urban planners, landscape architects and environmentalists. By…
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The Perry-Castañeda Library Map Collection, located at the University of Texas, is one of the largest digital map collections in the world. This collection contains maps of all continents and many countries, as well as topographic,…
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What is WMTS? A good example of a WMTS service is OpenStreetMap. It consists of an address to which client programs can request geotagged images. When you load OSM into QGis, the program connects to the…
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When working with spatial data in GIS software, you regularly encounter the problem of files that lack a clearly defined coordinate system. When a file lacks its coordinate system (CSR), it can lead to misaligned layers,…
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In a previous article we discussed how to display a symbology appropriate to S57 files. In this article we did not discuss how to display the values of bathimetric soundings for two reasons: the first because…
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To state the problem, here is an excerpt of the publication “Geometer n ° 2087, December 2011″: The issue of the month “Safety, reliability. Buried networks” by Laurent Polidori (director of ESGT) and Gille Costa (surveyor)…
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Although R is essentially a set of statisticals, its use has been extended to a number of areas, such as natural language processing. This library possesses also solic tools of spatial analysis, including analysis of the…
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In a previous article we discussed how to create a layer lines from a file text or Excel with Arcmap . Now is the turn with QGis.There are only two differences : the first is that…
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