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gvSIG-Desktop 1.11. User manual
gvSIG 1.11 User manual - Analysis and data processing - Vector - Geoprocessing tools - Difference - Running the 'Difference' geoprocess
Running the “Difference” geoprocessClick on the “Open Geoprocess” button to access the dialogue window which allows you to run the "Difference" geoprocess.
You can enable the “selected features” check boxes at this point of the geoprocess for the input layer and the overlay layer. If you click on the “Ok” button, the geoprocess will be run.
In the following image, the “Difference” geometry appears in black between a flood zone and one of the selected cities or towns. In this case, the new layer resulting from the calculation of the difference will take the schema (alphanumerical attributes) of the geoprocess input layer.
Cached time 11/21/13 06:58:22 
