Re: [R-sig-Geo] spatial regression with generalized least squares

2008-03-14 Thread Paulo Justiniano Ribeiro Jr
Dear G Allegri I'v e being running through old email here and gound this message from yours posted a while ago well, you could for instance, model the covariance matrix using a correlation function of the distances using nlme() with a spatial covariance structed or likfit() in package geoR. Both

Re: [R-sig-Geo] enumerate grid clusters/patches with size of contiguous cluster

2008-03-14 Thread Roger Bivand
On Fri, 14 Mar 2008, Murray Richardson wrote: Hi Roger and others, Thanks again for this helpful script. It made me see some potential to use spdep package for another related problem that I was previously using CGAL (C++) alpha shapes for. Is there a way to output a list of nearest neighb

Re: [R-sig-Geo] enumerate grid clusters/patches with size of contiguous cluster

2008-03-14 Thread Murray Richardson
Hi Roger and others, Thanks again for this helpful script. It made me see some potential to use spdep package for another related problem that I was previously using CGAL (C++) alpha shapes for. Is there a way to output a list of nearest neighbour pairs in an xy coordinate list (or binary gri

[R-sig-Geo] gdal error 1 (execution halted)

2008-03-14 Thread Lienert Christophe
Dear All, Parts of the he following email have been already posted on the R-devel list, but is supplemented with the code that may cause the error discussed below and put on the R-sig-geo list at the suggestion of Mr. Bivand. I am using R 2.6.2 on my Redhat AS4. I installed the RPM offered on t