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

[Michael Sumner]

I found a few discussions just by searching terms:

https://stat.ethz.ch/pipermail/r-sig-geo/2012-March/014409.html

http://casoilresource.lawr.ucdavis.edu/drupal/book/export/html/519



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