[BioC] Heatmap/plot: Label by colours

[Heike Pospisil]

Dear list members,

again a stupid question: I wish to plot the results of hierarchical clustering 
with dendrograms and with heatmaps. I used the following functions:

heatmap(exprs(data)[selected,])

and

plot(hclust(dist(t(exprs(data)[selected,]), method = "euclidean"), method = 
"average"))


The different arrays belong to different classes and I would like to label these 
classes by colours - e.g. class 1 as blue, class 2 as red and class 3 as green.

I have an expression set data and a target vector like this

 > targets$vivo
  [1] "h" "l" "h" "n" "h" "n" "0" "n" "h" "0" "h" "h" "h" "h" "h" "h" "h" "0" "h"
[20] "h" "l" "l" "n" "h" "h" "h" "h" "n" "h" "0" "0" "h" "l" "h" "h" "h" "n" "h"
[39] "h" "h" "h" "h" "l" "l" "h" "l" "0" "h" "h" "n" "h" "l" "0" "l" "h" "l" "l"
[58] "n" "h" "0" "h" "0" "n" "0" "h" "0" "h" "h" "h" "h" "n" "n" "h" "n" "h" "l"
[77] "l" "n"

It would be great to label the celfile names by colors indicating the classes 
"h", "l", "n" and "0".

Is this possible in BioC?

Thanks again in advance and kind regards,
Heike
-- 
Dr. Heike Pospisil
Center for Bioinformatics, University of Hamburg
Bundesstrasse 43, 20146 Hamburg, Germany
phone: +49-40-42838-7303 fax: +49-40-42838-7312