Alpha shapes to polygons:  http://rpubs.com/geospacedman/alphasimple

And Michael Sumner already linked to the one I'm using - alpha hull to
polygon shapefile:
https://stat.ethz.ch/pipermail/r-sig-geo/2012-March/014409.html

Nicole K.S. Barker
Ph.D Student / Étudiante au Doctorat
Laval University / Université Laval
Ducks Unlimited Canada / Canards Illimités Canada
LinkedIn: www.linkedin.com/in/nksbarker
Phone: 647-470-3207




On Tue, Sep 3, 2013 at 8:09 AM, Michael Sumner <mdsumner@gmail.com> wrote:

> 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@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
> >         [[alternative HTML version deleted]]
> >
> > _______________________________________________
> > R-sig-Geo mailing list
> > R-sig-Geo@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
>
>
> --
> Michael Sumner
> Hobart, Australia
> e-mail: mdsumner@gmail.com
>
> _______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>

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