Hi All, I was wondering if anyone has had any experience running gamm(mgcv) with a large spatial data set? I know the gamm help says this is a bad idea, but I wondered if there was a way to use something like filehash to store the matrices that gamm creates? -- David Depew PhD Candidate Department of Biology University of Waterloo 200 University Ave W. Waterloo, ON. Canada N2L 3G1 (T) 1-519-888-4567 x33895 (F) 1-519-746-0614 http://www.science.uwaterloo.ca/~ddepew