On 10/16/07, andrew haywood <[EMAIL PROTECTED]> wrote: > > I have then imported the classified vector file into grass. I now would > like to populate the forest class by intersected the polygons in my new > vector map with an existing forest class map and take the most common forest > type from the old map. I was thinking i could rasterise the old forest class > map and some how count the number of cells for each class within each > polygon and some how choose the most common class. >
This is probably of some help < http://grass.gdf-hannover.de/wiki/Aggregate_Values>. r.statistics might be useful, but the wiki entry gives you quite a thorough description. IMHO, it is far harder than it should be. starspan might also be an option. Regards, Jose
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