Great job. Thanks.
A little improvement for compatibility: in Matlab's original waitbar, the 'message' string is optional for the first call:
With your function it makes an error.
30 Jan 2013
Uses built-in netCDF capability to load a grid file created by GMT (Generic Mapping Tools) v3 or v4
Author: Kelsey Jordahl
Works perfectly with a huge .grd DEM. Thanks very much for this effort.
23 Jan 2013
Computation of co-seismic displacements due to a rectangular dislocation in an elastic half-space.
Author: Denys Dutykh
Nice and effective function.
If you need open mode fault and compute all the tilt and strain components, see my submission at http://www.mathworks.com/matlabcentral/fileexchange/25982
Regarding my previous comment, I just now noticed you recently added the 'crop' argument update which is exactly what I needed. You are way ahead of me... Amazing what a little bit of reading can do :) Thanks.