I’m relatively new to MATLAB and looking for some help. I have three equal sized matrices that define x, y and z. The matrices represents mapping data where x is an easting, y is a northing, and z is an elevation. x and y are set up on a regular grid (say, both 0:5:500), z is a variable (for example, survey data). For each grid point (x,y) I want to check the maximum difference in z within a given radius. Ultimately, the goal is to ascertain if there is an elevation change greater than say 6” within 20-ft.