MATLAB: For loop issue using fprintf to output contour3 levels to file.

contour3file outputfor loopfprintfMATLAB

Attempting to separate the contour3 output to a file (test.txt) with rows of x,y,z coords to represent contour levels.
My current issue is that I can't see how to make the For loop move to the second level, it stops after outputting the 8 entries of vertices that are in Level A. To be clear, each level is at a particular z-value.
The link above is the help file for contour3 outputs, it's a bit specific. And those are the formatting rules I'm following.

Best Answer

I recommend that you use a utility routine from the File Exchange: https://www.mathworks.com/matlabcentral/fileexchange/38863-extract-contour-data-from-contour-matrix-c