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...I want to assign names to the rows in my matrix so that when I use the 'agnes' function from R cluster package , the dendogram that is produced represents the rows of the matrix. This way I would know what elements in the matrix are clustered together. But when I do the following, rownames(distF) <- paste("A",dim(distF)[1]) it gives the following error; Error in dimnames(x) <- dn : length of 'dimnames' [1] not equal to array extent What am I doing wrong? Any help is most appreciated -- Ayesha Khan MS Bioengineering Dept. of Bioengineering Rice University, TX...