[R-sig-Geo] grid and spatial selection

[Laetitia Blanc]

Robert J. Hijmans wrote:
> 
> rgeos is looking very good! This can also be done with 'sp' :
> 
> o = overlay(maillesfrance, spcsv2)
> i = na.omit(unique(o))
> select = maillesfrance[i, ]
> 
> plot(select)
> 

It seemed to be easier with sp but actually, it didn't worked. When i asked
to R "select=maillesfrance[i,]", a warning message appeared : "Erreur dans
xj[i] : type 'list' d'indice incorrect" meaning that this kind of list was
incorrect.

And i don't know why, i can't load rgeos... I work on Windows with the R
version 2.11.1.

Any help ?

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