search for: hclustering

Hi all: As to hcluster,how can I control the cluster is performed according to rows(genes for instance) or columns(samples for instance)? I can't find the parameters for it. Thanks a lot! My best!

...) by using "as.matrix", i converted by data into a matrix. Now, I want to create a distance matrix. My data as shown above contains 364 rows and 4 columns. I have to create distance matrix based on the values of 2nd column. secondly, based on this distance matrix i would like to do "hclustering", to see which of the rivers have similar discharge patterns. more precisely, i need to see river(a,b,c,d) splitted in clusters with river having similar discharge patterns in one cluster. thnx in advanceeliza botto [[alternative HTML version deleted]]

Full_Name: Doug Hershberger Version: 1.2.2 OS: Red Hat-Linux 7.0 Submission from: (NULL) (216.99.65.36) In the R FAQ I find the following entry explaining that R no longer has problems with memory. http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why%20does%20R%20run%20out%20of%20of%20memory%3f However in my installation: R Version 1.2.2 (2001-02-26) Installed from the red hat RPM on your

Hi, Suppose, if I create 15 files in my working directory. set.seed(48) lapply(1:15,function(i) {m1 <- matrix(sample(1:20,1686*2,replace=TRUE),nrow=1686,ncol=2); write.table(m1,paste0("file_",i,".txt"),row.names=FALSE,quote=FALSE)}) ?D <-dir() D1 <- D[order(as.numeric(gsub("\\D+","",D)))] D1 ?res <- t(sapply(D1,function(x) {x1<-

Dear useRs, i am using NbClust to determine appropriate number of cluster for hclustering. i am consistently getting the following error Error in if (is.na(n) || n > 65536L) stop("size cannot be NA nor exceed 65536") : missing value where TRUE/FALSE needed Does any one know where i am wrong?? thanks in advance eliza [[alternative HTML version deleted]]

Dear Dario Sacco, >>>>> "DS" == Dario Sacco <dario.sacco at unito.it> >>>>> on Thu, 06 May 2010 17:45:30 +0200 writes: DS> Dear Dr. Maechler, DS> I am an agronomist and a researcher at the University of Turin. I am DS> also teaching "Applied statistics", then I have some knowledge in DS> Statistics, but not

Hi all, I am a real novice to R. :) I am struggling with a problem for generating colored dendrogram. I have searched the R list and complied/collected a R code which can generated a colored dendrogram based on the rainbow color and 4x4 similarity matrix (say matrix:m). In this dendrogram, each leaf is colored differently. But, I do not want the leaf colored on a random basis. I want to assign