[R] Could anyone tell me how to plot a hierarchical clusterin g in a black-white color?

Liaw, Andy andy_liaw at merck.com
Fri Nov 12 00:14:15 CET 2004

Try using the argument col=gray(seq(0, 1, length=64)), or something like


> From: Frank Duan
> Dear R people,
> I am trying to do a hierarchical clustering to a matrix using
> heatmap() function. But I like to have the plot to display in a
> black-white manner? Could anyone tell me how to do that?
> Thank you.
> Frank
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