[GRASS-user] Determining area of poligon vector layer around circle of points in other vector layer

Rainer M Krug r.m.krug at gmail.com
Thu Jun 12 13:13:18 EDT 2008


I have two vector layers - one with polygons and one with points, both
in UTM 34 S.

Now I would like to calculate the area of the polygons in circles
around the points, i.e. how much area in a 500m circle around the
points is covered by the polygons, and store this in the attribute
table of the point layer.

Is there any easy way of achieving this? If I simply buffer the
points, the circles overlap sometimes and form one polygon, and I want
to have the results for each point - so that doesn't work.



Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Plant Conservation Unit
Department of Botany
University of Cape Town
Rondebosch 7701
South Africa

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