Is it possible to change surface plot x-axis values to represent physical dimensions?

So, I'm attempting to represent variables in a matrix on a surface plot, and that has and will continue to work without error.

However, I am interested in having the x-axis represent actual dimensions instead of the column indicator. For example, each unit of x could correspond to a meter and a half.

I realize that this is not analogous to how MATLAB actually generates the surface plots, so I recognize that this is probably impossible. But it would add much needed validity to what I am working on.

Impossible or possible? (and if so how?)

Thank you in advance!

[Sara]

Have you tried surf(x,y,your_surf) where x,y are your physical dimension?