Hi all,

How can I plot a matrix of values as a heatmap where values are shown
from green to red intensities, or blue to yellow intensities, like in
the following figure?

http://www.coriell.org/images/microarray.gif

I want to have the option of doing this with either green-red maps or
blue-yellow maps. Is the right function for this imshow, or pcolor?
Also, how can I get the scale bar to the left of it that shows the
ranges of the intensities, and how can this scale be adjusted?

Thanks very much.

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