We still don't have a polygon splitting routine in GEOS/JTS, so there's
no direct perfect way of doing this.
One ugly way to split the polygon is to buffer the line every so
slightly and then difference it out. That still leaves you with the
problem of allocating the resulting polygons to the left and right sides
of the line.
Funders for split-polygon are welcome to step forward. Otherwise,
waiting will eventually cause it to pop out, it is on the roadmap, just
behind paid work, per usual.
P
Paul Moen wrote:
Is there a way to take a polygon or multipolygon and clip with a linestring?
I am trying to take the polygon outlined in black, clip it using the
blue LINESTRING to achieve the grey multipolygon.
Is this possible? I think the difference function would work if the
LINESTRING were a polygon. Keep in mind that this drawing is rough.
Thanks,
Paul Moen
[EMAIL PROTECTED]
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Paul Ramsey
Refractions Research
http://www.refractions.net
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Phone: 250-383-3022
Cell: 250-885-0632
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