[Biopython] How to use Bio.Cluster

[Ogan ABAAN]

Hi all,

I am trying to use Bio.Cluster and also comparing the output with the 
data generated by Cluster GUI. In the GUI version there is a tab "Adjust 
data" where you can center genes and center arrays for either mean or 
median. Doing that seems to give nice looking trees. However, 
Bio.Cluster do not seem to have the function to center data or I don't 
see it. So the trees are always black and red with no intermediate 
values. I tried scaling without any improvement.

Does anybody know a why to achieve centering. I am using 
Bio.Cluster.treecluster.

Thanks

Ogan