[R] maptools: Test if point is in polygon

[baptiste auguie]

I don't know about the maptools package but one general way to do this  
would be to compute the convex hull (?chull)  of the augmented set of  
points and test if the point belongs to it.

Hope this helps,

baptiste



On 5 Feb 2009, at 13:21, Aleksandr Andreev wrote:

> In R's maptools package, is there a built-in function to test if a
> given point is "inside" a given polygon on the map?  The map was
> loaded from an ESRI Shapefile. The point's latitude and longitude are
> known.
>
> Thank you!
>
> Aleks
>
> --
> ------------------------
> Aleksandr Andreev
> Fulbright Fellow
> Graduate School of Management
> St Petersburg State University
>
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_____________________________

Baptiste Auguié

School of Physics
University of Exeter
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