Hi,

spatstat::dirichlet can do that
http://hosho.ees.hokudai.ac.jp/~kubo/Rdoc/library/spatstat/html/dirichlet.html

Note that to get them as SpatialPolygons thereafter, you've got to do this :
spatstat.options<http://hosho.ees.hokudai.ac.jp/~kubo/Rdoc/library/spatstat/html/spatstat.options.html>("gpclib")
= TRUE

best

mathieu


2013/10/2 Milan Cisty <milan.cisty@stuba.sk>

> I would like to draw voronoi or thiessen polygons inside my watershed
> polygon which I have in shape file. I found only functions for drawing
> thiessen polygons in rectangular area - please could you let me know, if
> function for finding thiessen polygons exists also for irregular
> boundaries?
> I will need also what will be the area of each polygon.
>
> Thanks
>
> Milan
>
>
>
>
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