How to get more color gradient on a surface plot?

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Al
Al 2015-5-9
评论： Al 2015-5-20
I have made a surface plot. The color gradient is mostly dark blue. How can I adjust the color gradient to get more colors?
Adjusting the color map in the plot tools does not work.

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Image Analyst
Image Analyst 2015-5-9
You need to manually build a non linear colormap. Attach your data and script so people can show you how.
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Walter Roberson
Walter Roberson 2015-5-11
I don't think you did what I asked. I think you did
surf(Xm, Ym, log10(Zm)); set(gca,'ZScale','log');
or else
surf(Xm, Ym, log10(Zm), Zm); set(gca,'ZScale','log');
or else
surf(Xm, Ym, log10(Zm), log10(Zm)); set(gca,'ZScale','log');
but what I asked for was
surf(Xm, Ym, Zm, log10(Zm)); set(gca,'ZScale','log');
You would only get the error you did if you had negative Zm or negative log10(Zm) in the third position in conjunction with log axis.
Al
Al 2015-5-20
The one you asked for works. Thank you.
surf(Xm, Ym, Zm, log10(Zm)); set(gca,'ZScale','log');

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