[GRASS-user] limit Voronoi or other vector programs
hamish_b at yahoo.com
Wed Oct 1 23:40:42 EDT 2008
William L. Baker wrote:
> v.voronoi produces lots of spurious polygons if there is lots of space
> without points outside where the points actually lie, which occurs if a
> study area has an irregular shape (not rectangular). Thus, some kind of
> buffer around the points is needed to set limits on the analysis space.
If v.hull is no-good for areas shaped like a "C", perhaps v.buffer +
"v.clean -> remove small areas" or v.buffer then v.centroids+v.dissolve
would do a better job?
and don't forget v.select which is much faster than v.overlay.
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