How to plot 4D contour lines (XYZ-V) in MATLAB?

Question

I have dataset of XYZ as the coordinates and V as the value at each point (100x4 matrix).

I plot the 3D surface using patch. (by faces & vertices)

How can I

Answer 1

cont3d from MathWorks FileExchange is not exactly what you're looking for, but it may give you some ideas.