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I am very new to GIS, so don't know if this is EXTREMELY easy or impossible.

I have GPS coordinates for stores (about 15000) for which I have created a buffer zone around each store location obviously (or not) in a single layer. In metropolitan areas I now have overlapping buffer areas. I would like to calculate the area where buffers overlap.

I have established how to do this if each point were a separate layer, but with 15000 points, I just do not have the time or the energy to do this.

Please help.

I am working in QGIS.

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  • related: gis.stackexchange.com/questions/26386/… Commented Jun 11, 2014 at 18:00
  • Is there a specific reason for doing this the vector way or could you work with a heatmap raster? Commented Jun 11, 2014 at 18:03

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