Visualize View From a Particular Point Using GIS
How many places are visible from your point, e.g. you want to construct a house how many places are visible from that sight.e.g. you want to practice shooting , how many visible spots can be shot from location (A Military Application)...likewise many other interesting applications can be performed using viewshed analysis.Image by Tim Hill from Pixabay |
Performing ViewShed Analysis
Use any GIS software, e.g. i will use ArcMap, as a first step get data set of your area. DEM (Digital Elevation Model) that gives topographic information (lat, long, height) freely available online. A shapefile of your point of sight, which you can create it easily in GIS software
Example: plne, an elevation grid; and lookouts.shp,
a lookout location shapefile.
Step-1: Start ArcMap, Add data
Search for Hillshade and specify files plne or your grid file
Make
sure that the Input surface is plne grid file and Observer points are from lookouts your sight shapefile.
Opt for a temporary Output raster. Click OK to dismiss
Viewshed Analysis in ArcMap |
Image showing view from point |
- 0 for not visible,
- 1 for visible from one observer point,
- 2 for visible from both observer points.
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