Tom H. wrote: > I recently downloaded R for Windows, running on Win XP. I'm trying to create > a perspective plot but not having any luck after reading the R manual and > several examples found on the Internet. > > I have a 100 x 100 matrix of Z data as a tab-delimited text file exported > from Minitab. I read this in to R using read.delim; this seemed to go ok. > I created X and Y using seq() to get 100 divisions for the X and Y axes. > Again, everything looked good, when I typed X or Y I got a string of 100 > numbers. > > However, when I try to do persp(x,y,z) I get an error something like: (list) > cannot be coerced to double. I know the basic data (matrix of z values) is > ok (no hidden non-numeric values) because Minitab will graph it just fine. > Any suggestions on how to proceed? Thanks in advanced for your help. > Data frames are not matrices. Presumably, you want as.matrix(z).
-- O__ ---- Peter Dalgaard Ă˜ster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-help@stat.math.ethz.ch 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.