[EMAIL PROTECTED] wrote: >Hi, >I am a new student to R and I was hoping someone could help me with >the error message I keep getting when I try to use the nb2listw() >function. > >I have 45 sites and I want to get an autocorrelation value for sites >within 1000m of each other. > >coords<-cbind(EAST,NORTH) >coords<-as.matrix(coords) >nb1000<-dnearneigh(coords,0,1000,longlat=TRUE) > >then when I try to run the nb2listw(nb1000, style="W") >I get an error message of "Empty neighbour sets found". Can someone >tell me what this means and how to possible fix it. > >Thanks >Lynnette > >~ >Lynnette Dagenais >M.Sc. Candidate >Department of Renewable Resources >University of Alberta >Edmonton, AB > >______________________________________________ >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. > > > > Hi, this means that at least on site has no neighbours. Set zero.policy=TRUE (you may read ?nb2listw) to avoid getting an error. chooseCN (pack. adegenet) could help you choose your connection network interactively. Cheers,
Thibaut. -- ###################################### Thibaut JOMBART CNRS UMR 5558 - Laboratoire de Biométrie et Biologie Evolutive Universite Lyon 1 43 bd du 11 novembre 1918 69622 Villeurbanne Cedex Tél. : 04.72.43.29.35 Fax : 04.72.43.13.88 [EMAIL PROTECTED] http://lbbe.univ-lyon1.fr/-Jombart-Thibaut-.html?lang=en http://pbil.univ-lyon1.fr/software/adegenet/ ______________________________________________ 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.
