[R-sig-Geo] Concave hull of lat lon points?

[Michael Sumner]

Try the alphahull package, it's not integrated with the sp family but
it's simple enough.



On Sat, Jun 2, 2012 at 8:28 AM, Christian Jansson <chrjan70 at gmail.com> wrote:
> Hi,
>
> I have a large set of points (lat lon) for which I must find the hull. The
> functions rgeos::gConvexHull followed by rgeos::gBuffer work well when the
> points are grouped together in a circular fashion, but not when the points
> are for example in a banana shape (when it is better if the hull turns in).
>
> Is there a method to do it in R?
>
> Have a nice weekend everyone.
>
> /Chris
>
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-- 
Michael Sumner
Hobart, Australia
e-mail: mdsumner at gmail.com