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Topic: CLustergram for heatmap in MATALB
Replies: 2   Last Post: Nov 28, 2009 2:42 PM

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Posts: 2
Registered: 11/24/09
CLustergram for heatmap in MATALB
Posted: Nov 24, 2009 8:05 PM
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I am trying to use the clustergram command of MATLAB to plot a heat map of a set of data stored in a matrix X. The default colormap is redgreencmap, in which red represents values above the mean, black represents the mean, and green represents values below the mean of a row (gene) across all columns (samples).However, I want to assign these colors not based on the mean of each row, but based on if they are greater than or less than zero, i.e.:
red: if the values are greater than zero
green: if the values are less than zero
black: if the value is zero.
(The mean can be anything)
Is there any way of doing that?

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