[R] Colour branches/labels of dendrogram according to a grouping variable

[Johannes Radinger]

Hi,

is there a way to color the branches or text label of the branches of
dendrograms e.g. from hclust() according to a grouping variable. Here
I have something in mind like:
http://www.sigmaaldrich.com/content/dam/sigma-aldrich/life-science/biowire/biowire-fall-2010/proteome-figure-1.Par.0001.Image.gif
(ectodermal, endodermal, mesodermal).

/johannes