On 13/02/08 12:48, Hamish wrote:
Rick Reeves wrote:
I'm using v.in.ogr to clip a polygon set (in this case, county
boundaries) to the boundary of a (rectangular) raster image.
As far as I know, this is the only way to do this; I tried to create
a new location with the same boundaries and import the polygon
shapefile into the location, but clipping did not occur as expected.
In any case, v.in.ogr did not clip the 'boundary polygons' to the the
edge of the raster image, but included the entire polygon. Only
excluded polygons completely outside of the bounding box are clipped.
I assume you used 'v.in.ogr spatial='. This works like v.select.
There MUST be a way to clip all polygons to the bounding box edge.
Can any one suggest a way?
v.in.region + v.overlay.
Or v.in.region + v.select if you don't wan't to merge attribute tables.
Moritz
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