[BioC] heatmap.2 ..help..how to cluster column ..but not Rows..

[Sean Davis]

On Thu, Apr 14, 2011 at 9:49 PM, Saurin D. Jani <saurin_jani at yahoo.com> wrote:
> Hi BioC,
>
> This must be simple but somehow I can not be able to do it...
> How can I cluster samples only.. below code is giving me dendrogram on both rows and clumns...! if I do Rowv = FALSE..then I don't see any colors and KEY.
>

Hi, Saurin.

See the "dendrogram" argument in heatmap.2 help.  In particular,
dendrogram="column" will turn off the row dendrogram.

Sean

> Please see this:
>
> FeatureX is Matrix with proper rows and colmns.
>
>
> row.dist <- as.dist(1 - cor(t(FeatureX)));
> col.dist <- as.dist(1 - cor(FeatureX));
> heatmap.2(FeatureX,col=bluered,Colv = as.dendrogram(hclust(col.dist, method = "centroid")), scale = "none",key = TRUE,density.info = "none",tracecol="black");
>
> Thank you in advance,
> Saurin
>
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