Thanks for the response Daniel. Our question is what happens if instead of the values you provided, the values along the segment are 1 2 3 6 6 3 3 6. Now there are two mode values: 3 and 6. What value is mapped?
Not sure this matters as we assume the mode function works the same in both directions, but to be accurate we are actually asking about this in relation to 3dVol2Surf mapping rather than the other way around as written in our original post.