Hi, I have a problem with ctree of party package. I have data on distribution of more than one species (about 50 species) and I would like identify the relation of this multivariate object (species distribution) with a number of explanatory variables.
rs is the name of my dataframe containing the species (columns from 2 to 51) and the explanatory variables (columns 52 and 53). Rows are my sampling sites. I wrote: species<-rs[,2:51] v1<-rs[,52] v2<-rs[53] tree<-ctree(species~v1+v2) It does not work , but when I use the same formula for the univariate case (i.e. a single column - e.g. the total number of species in each samplig sites) it works. I know that ctree can handle multivariate response variables, but I cannot figure out how to do that. Someone can help me? Thank you Valeriano ______________________________________________ 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.
