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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EX4 4QL, UK
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