<html><div style='background-color:'><P>Hi</P>
<P>I am using R for a simple hierarchical clustering method for some binding site similarities of some ligands.I already have a distance matrix computed. I am using hclust method to run it. (Thus I dont want to use dist method) Could anyone tell me what format does my distance matrix need to be for hclust to run? </P>
<P>I used the read.table method to read the file as a tab delimited lower triangular matrix. And this i am sending to hclust to be clustered. How ever this is the error i get :<BR>Error in if (n < 2) stop("must have n >= 2 objects to cluster") :<BR> argument is of length zero<BR><BR>Am I doing this right?<BR>Also my distance matrix contains the X and Y labels that will need to be displayed on the tree leaves.</P>
<P>Could anyone please help me out?</P>
<P>Thanks</P>
<P>Shalini<BR><BR></P></div></html>