Thanks a lot, Steve. This is really helpful.

Wendy

On 27 March 2011 20:30, Steve Lianoglou <mailinglist.honeypot@gmail.com>wrote:

> Hi Wendy,
>
> On Sun, Mar 27, 2011 at 7:43 PM, Wendy Qiao <wendy2.qiao@gmail.com> wrote:
> > Hi all,
> >
> > I am doing a hierarchical clustering for 12,000 genes across 3 samples.
> The
> > gene expression is stored in a matrix called 'Gexpr' which is a 12000 by
> 3
> > matrix.
> >
> > I plot the cluster using
> >
> > heatmap.2(Gexpr, Rowv=TRUE,
> > Colv=FALSE,dendrogram="row",col=greenred(75),trace="none",dendrogram
> > ="column")
> >
> > I was finding a way to access the probe id's for one of the clusters.
> Could
> > anybody please give me some suggestions?
>
> The `heatmap.2` function "invisibly" returns a list/structure with
> lots of stuff in it.
>
> Look in the "Value" section in the ?heatmap.2 help documentation -- I
> guess you're most interested in the `rowInd` and `rowDendrogram`
> stuff. Look through the documentation for ?dendrogram (and the stuff
> in the "See Also" sections), too.
>
> -steve
>
> --
> Steve Lianoglou
> Graduate Student: Computational Systems Biology
>  | Memorial Sloan-Kettering Cancer Center
>  | Weill Medical College of Cornell University
> Contact Info: http://cbio.mskcc.org/~lianos/contact
>

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