[R-sig-Geo] spatstat, maptools, sp, and as.ppp

Mark Connolly mark_connolly at acm.org
Thu Apr 1 14:25:56 CEST 2010


I may be just dense, but maybe this will help someone else avoid some 
head-brick wall interactions.

If you just _know_ that yesterday you weren't getting "Error in 
as.ppp.default(varname) : Can't interpret X as a point pattern" when you 
were executing as.ppp on a SpatialPoints instance, then it may be that 
yesterday you were loading maptools and today you are not.



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