Dear forum,
I would like to use the kernel2d or spkernel2d in the Splancs-package, but it does not recognize my polygon data. "Error in kernel2d(as.points(ptsbin), polygonprov, h0 = 2, nx = 100, : " is the error message. Invalid poly argument The data are defined as follows: polgonprov<-list(x=polyprov$X, y=polyprov$Y) with X and Y coordinates in the Lambert1972 notation. The points are defined in the same coordinate system and it does recognize them, so I don't suppose that is the problem. I can also draw the province polygon by: plot(c(192800,254100),c(154100,221800),type="n") polygon(polyprov$X,polyprov$Y) Can someone help me with this? Or explain to me how exactly is the polygon class defined in splancs? I also tried with Polygonprov<-Polygon(list(x=polyprov$X,y:polyprov$Y)) but that does not seem to work either. Thanks already in advance. Kind regards, Elke __________________________________ Elke Moons, PhD Transportation Research Institute Belgium E-mail: <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.