I understand that you want to add transparency to the plot based on the values of diff. You can modify the alpha values of the surface using ‘FaceAlpha’ property. Normalize the values in the diff matrix and use them in place of alpha values as the values should be between 0 and 1.
You can refer to the following:
For improving the 3D representation, you can adjust the colormap. Instead of using the “flipud(pink)” colormap, you can experiment with different colormaps that better represent your data. MATLAB provides several built-in colormaps, or you can create your own custom colormap.
Hope this helps!!
