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gvSIG-Desktop 1.12. User manual
gvSIG 1.11 User manual - Analysis and data processing - Vector - Geoprocessing tools - Convex hull - Creating a convex hull
If you select the “Convex hull” geoprocess, the following dialogue appears:
After selecting the layer whose “Convex Hull” you wish to calculate and specifying an shp result file, you can run the geoprocess and generate a new result layer.
The following image shows the convex hull created which surrounds all the points in the input layer.
Cached time 11/21/13 15:01:07 
