[R] Odp: alphahull: is low level plotting possible?
Petr PIKAL
petr.pikal at precheza.cz
Thu Jun 16 17:12:42 CEST 2011
Hi
>
> Dear R users,
> I am using package alphahull version 0.2-0 with R-2.13.0. Here is my
problem.
> I have produced a 2-D plot of points and need to draw convex hulls
around
> some subsets of these points. So I just need to add the convex hulls to
> the already existing plot. That is why I cannot use the plot.hull
> function. So, is there a way to just add the convex hulls to the already
> existing plot, just as the low level functions "lines" and "points" add
> lines and points to an already existing plot? I suspect the solution is
in
> the "arc" function, but I am not sure.
See ?chull and its help page.
Regards
Petr
>
> Any suggestions will be appreciated.
>
> Regards,
>
> Martin
>
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