PDE Plot for contour lines, for a specific face

Question

Miles Hao Peng Su 2023-3-20

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https://ww2.mathworks.cn/matlabcentral/answers/1931705-pde-plot-for-contour-lines-for-a-specific-face

回答： Zuber 2023-4-14

Hi guys! I am trying to plot a contour plot for my PDE result, like this one:

However, if I only wants contour plot for face 5, how can I do it? Also, is it possible to have the value label directly on the contour lines itself? Thank you so much!

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Answer 1

Zuber 2023-4-14

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Hi,

I understand that you want a contour plot for ‘face 5’ and label the values on the contour lines. Assuming that the PDE result is stored in a matrix M, the coordinates for ‘face 5’ can be extracted as follows:-

fc_5 = M( :, :, 5);

Then, the contour plot for ‘face 5’ can be obtained using ‘contour’ function:-

contour(fc_5);

Further, to label the values on contour lines, we can use the function ‘clabel’ as follows:-