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....G1 ------------------------------------------ res <- array(0,c(nc.max - nc.min +1,2)) res[,1] <- nc.min:nc.max clusters <- NULL for (nc in nc.min:nc.max) { cl <- pam(dist.mat,nc,diss=TRUE) res[nc-nc.min+1,2] <- G1 <- index.G1(as.matrix(alpha.vec),cl$cluster,d=dist.mat,centrotypes="medoids") clusters <- rbind(clusters, cl$cluster) } ############################################################################### I get the following error whenever I use index.G1: > nc <- 2 > cl <- pam(dist.mat,nc,diss=TRUE) > cl Medoids: ID [1,] 5...

...nal solution?). I was able to find the Package ‘clusterSim’ which Calculates Calinski-Harabasz pseudo F-statistic but I am having some difficulty substituting in the CL (A vector of integers indicating the cluster to which each object is allocated) argument in the formula: index.G1 (x,cl,d=NULL,centrotypes="centroids") Thanks in advance for any help, Sincerely, Pancho Aguirre [[alternative HTML version deleted]]