kbannarm <kbannarm <at> hotmail.com> writes: > > This is my script: > > Madr<-read.csv("MadRegSppSite.csv", sep=",", row.names=1) > rownames(Madr) <- Madr[,1] > Madr <- Madr[,-1] > MadrJaccard<-vegdist(Madr, method="jaccard",binary=FALSE) > MadrJaccard<-as.matrix(dist(MadrJaccard)) > write.table(MadrJaccard,file="MadrJaccard.csv",sep=",",row.names=T) > > The input file is a binary matrix of presence absence of species organized > in rows, and sites in the first column. > The script is running fine but when I open it in excel (MadrJaccard) the > Jaccard values are between 0 and 4 when the range of values is only supposed > to be between 0 and 1. > > I cannot figure out what is going on, does anyone have any ideas? >
You should carefully re-read yout script. The key line contains dist(MadrJaccard) which calculates Euclidean distances of Jaccard dissimilarities. Do not calculate metadistances. Cheers, Jari Oksanen ______________________________________________ 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.