BLANDENIER Lucien wrote: > Ok, but I will obtain statistics for each polygons separately and not a > "global" statistic considering all the polygons of a same category?
If I understand your aim, I think you can have your Polygons map and attach to it 2 layers. The 1st layer would contain 1 category value for all features of your interest, e.g. areas (each defined as a "boundary + centroid"). Then, "v.rast.stats" will operate on the category/-ies values for all/-multiple areas queried. In the 2nd layer, you can define a unique category for each vector feature. So, the stats should be single-vector-feature oriented. Funny, I am "stuck" as on how to (re-)define in layer 2 the "cat" column with unique categories for each (internal) feature id. There is nothing that helps-out towards this (simple?) task in the manuals (v.to.db). Any help? Nikos [rest deleted] _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
