[BioC] heatmap without column's dendrogram

[Federico Abascal]

Dear colleagues,

I am working with a matrix (like a matrix of gene expression) and I have
done a hierarchical clustering of genes, and want to plot it using a
heatmap.

My problem is that the heatmap reorders also the columns (not only the
genes), and I don't want the columns to change their order.

How can I solve this problem???

Thanks in advance,
Federico