How to get more color gradient on a surface plot?

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Al
Al am 9 Mai 2015
Kommentiert: Al am 20 Mai 2015
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.

Akzeptierte Antwort

Image Analyst
Image Analyst am 9 Mai 2015
You need to manually build a non linear colormap. Attach your data and script so people can show you how.
  11 Kommentare
Walter Roberson
Walter Roberson am 11 Mai 2015
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 am 20 Mai 2015
The one you asked for works. Thank you.
surf(Xm, Ym, Zm, log10(Zm)); set(gca,'ZScale','log');

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