[R-sig-Geo] From "ashape" to spatial polygon

Michael Sumner mdsumner at gmail.com
Tue Sep 3 14:09:41 CEST 2013

I found a few discussions just by searching terms:



On Tue, Sep 3, 2013 at 8:25 PM, Francesco Carotenuto
<carotenuto_francesco at yahoo.it> wrote:
> Hi, is there a way to convert an "ashape" object (object class of package alphahull) into a spatial polygon? I need only the alpha hull object (the external contour) and not the delaunay triangles. If not, is there a way to simply create a single spatial polygon from a matrix containing xy coordinates?
> Thanks
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Michael Sumner
Hobart, Australia
e-mail: mdsumner at gmail.com

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