MATLAB: Labels on the contour have too many digits

contour

How can I set the precision of the numbers on my contour plot? Now the clabels are like: 1.29567, I would like to have it rounded like: 1.3.

Thanks

Best Answer

I have done the following and it works perfectly:

[c,h]=contourf(X,Y,H); texth=clabel(c,h,'manual','fontsize', 20); for i=1:size(texth) textstr=get(texth(i),'String'); textnum=STR2DOUBLE(textstr); textstrnew=sprintf('%0.3f', textnum) set(texth(i),'String',textstrnew); end

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Hi,

seems like an openGL issue. Changing the renderer to painters or zbuffer or opengl software works:

c_H=figure;
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Z= hadamard(20);
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MATLAB: How to label contour lines in meshc 3D-plot

I would use a separate call to contour. You may have to experiment with the approach in Yair Altman’s Undocumented MATLAB article Customizing contour plots part 2 to put the contour plot on the same plane as the contours drawn by the meshc function.

When you get your code working, consider generalising your code to a function and then contribute it to the File Exchange. It seems useful.

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