gianni lavaredo <gianni.lavar...@gmail.com> wrote on R-sig-geo:
I wish to convert a really complex "SpatialPolygonsDataFrame" to owin using
MyMask<- readOGR(".", "Mask")
MyMask.owin<- as(MyMask, "owin")
but I get this error massage in the end
Errore in matrix(FALSE, npoly, npoly) : too many elements specified
This error is flagged by the package 'spatstat' which is attempting to check
whether any pair of polygons is overlapping. Apparently there are so many
polygons ('npoly') that the system can't create a logical matrix of size npoly
* npoly. That is indeed a lot of polygons (e.g. my laptop will accept npoly =
25,000).
To avoid this error, you could try setting
spatstat.options(checkpolygons=FALSE)
which will simply turn off the checking. Do this if you are confident that the
polygons do not overlap.
Good luck!
Adrian Baddeley
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