I have two polygon layers I'd like to overlay using QGIS or another open source tool. What I want as output is a polygon layer with the extent of one polygon, but with each polygon in that layer subdivided into polygons based on overlapping polygons in the second layer.
This seems like a basic operation but I'm having trouble finding documentation on how to do it.
Answer
I seem to have gotten what I want by using the SEXTANTE Toolbox to run v.overlay from GRASS, with the "OR" operation selected.
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