Understanding heatmap dendogram clustering in R

Question

I would appreciate any info material on the dendograms (Colv, Rowv) of R\'s heatmap function. Such as how the clustering works (is it euclidean distance?). You don\'t have t

Answer 1

From the manual:

distfun : function used to compute the distance (dissimilarity) between both rows and columns. Defaults to dist.

hclustfun : function used to compute the hierarchical clustering when Rowv or Colv are not dendrograms. Defaults to hclust. Should take as argument a result of distfun and return an object to which as.dendrogram can be applied.

dist() has as default the euclidean distance and hclust() the complete linkage method.