Is it possible to make contour graph with log scale colorbar?
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So, basicaly it's all explained in the title. I would like to make contourf plot but in such a way that the colorbar is in log scale because I have quite a large range of values in my data.
I've read all the help on contour and contourf functions and colorbar but nothing useful can be found there.
Thank You in advance!
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Accepted Answer
Wayne King
on 12 Aug 2012
Edited: Wayne King
on 12 Aug 2012
Sure just take the log() of the input matrix Z. I'm assuming your data are nonnegative.
z = peaks;
z = abs(z);
contourf(log(z))
colorbar
Or if you want it in "dB"
contourf(10*log10(z))
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