Hi Joshua, did you have a look at this tutorial ? http://www.bioconductor.org/workshops/Summer02Course/Labs/basics.pdf It helped me a lot when I started using bioconductor. You will need the hclust function from the mva package. hoping it helps ;) many greetings, Sylvia >Message: 2 >Date: Fri, 16 Jan 2004 03:53:42 -0800 (PST) >From: "J. Mcelwee" <jmcelwee@u.washington.edu> >Subject: [BioC] affy use question >To: bioconductor@stat.math.ethz.ch >Message-ID: > <pine.a41.4.58.0401160351340.23486@dante36.u.washington.edu> >Content-Type: TEXT/PLAIN; charset=US-ASCII > > Hello. I have a question concerning the use of the affy package and >clustering, and was hopeing someone might be able to help me out. > i'd like to be able to cluster my arrays as a quality control measure >(to make sure that replicates cluster with each other, etc.) I'm >relatively new to using R and the affy package, so if anyone could help me >out, i'd appreciate it. thanks! >-j > > >