Hello, The following code does'nt work for me. The last command reports an error. I have created a consensus tree using the consensus comand from phylo but cannot manipulate the phylo object afterwards to create a dendogram , by transforming the phylo object into a hclust object and then into a dendogram ?? Thanks for any help library(ade4) library(cluster) library(stats) library(ape) data<-read.table(file="in.matrix",header=FALSE,sep="\t",row.names=1) dis<-dist.binary(data,method=5,diag=TRUE) clust<-hclust(dis) tree1<-as.phylo(clust) tree2<-as.phylo(clust) tree3<-as.phylo(clust) tree4<-as.phylo(clust) tree5<-as.phylo(clust) liste <-list(tree1,tree2,tree3,tree4,tree5) cons<-consensus(liste,p=0.5) cons_clust <-as.hclust(cons) Error in "[<-"(`*tmp*`, i, value = numeric(0)) : nothing to replace david