GIS coaching for territorial management.
It is not easy, in geomatics, to get a good grasp of the geodesy notions that underlie the manipulation of geographic data. Unfortunately, many users do not have a sound knowledge of these concepts. I have…
Read More
In the previous article, ArcHydro: determination of the watersheds of a territory (1), we analysed points 1, 2, and 3. In this article, we will discussed the last three points: – Segmentation of the network flow…
Read More
We will use ArcHydro to calculate the different whatersheds of a given territory. It is not only important to know the different steps to achieve the desired result, but also the assumptions we will be using.…
Read More
ArcHydro Presentation ArcHydro is a set of data models and tools that work under ARCGis to support the data analysis of superficial water resources. You can use ArcHydro to delineate and characterize the watershed lines, define…
Read More
Thanks to the SRTM project we can access to a comprehensive world coverage of land elevation data. It has become very simple to create one’s own topographic maps with QGis . We will discuss here : Download elevation Data To download the elevation data of your area of interest , go on page http://viewfinderpanoramas.org/dem3.html This video shows you the progress of the download . The data available corresponds…
Read More
In the previous article (Le Cube spatio-temporel d’ArcGis : 1- découverte) we discussed how to create a spatial-temporal cube from a cloud of XYZ points. The points are grouped into ” boxes ” (bins) corresponding to 3D pixels. We have discussed how to depict them in an ArcGis Pro 3D scene. In this article we will discuss how to analyze the…
Read More