[R-sig-Geo] Determine if a line segment intersects a polygon
Roger Bivand
Roger.Bivand at nhh.no
Sat Aug 11 12:58:09 CEST 2007
On Fri, 10 Aug 2007, Waichler, Scott R wrote:
> I am looking for a method that would determine whether any part of a
> line segment defined by (x0, y0) and (x1, y1) intersects a given polygon
> (true or false). I don't have any other geospatial needs here, so if a
> solution exists using base R that would be great.
Perhaps look at crossing.psp() in the spatstat package - there are lots of
useful functions there.
Roger
>
> Thanks,
> Scott Waichler
> Pacific Northwest National Laboratory
> scott.waichler _at_ pnl.gov
>
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>
--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no
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