MATLAB: Empty plotting using contourf

contourf

Hi: I have a data set of X,Y,Z, which corresponds to x,y axis, and paremeter need to be plotted
but when I use [xc,yc]=contourf(X,Y,Z),
the plotting is blank, could anyone help me about this
Thanks!
Li

Best Answer

Your data throws this error when I try to plot it with contourf:
Warning: Contour not rendered for constant ZData 
> In contourf (line 60)
You will have to solve that problem.
Exploring this, the mean (using nanmean) of ‘Z’ is 6, and standard deviation (using nanstd) is 0.
This is the best you can hope for:
figure(1)
contourf(X, Y, Z, [6 6])
grid on
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