Derivative Grids

Invokes popup menu, which can be selected in two places:

This will create a new grid, with the same size and spacing as the original grid.

You must save the new grids (File, Save DEM)  if you want to use them again.  When you save, you can choose either the MICRODEM or GeoTIFF format.  The derivative grid can be manipulated in its own right.'

The program can automatically save the files if your pick the Multiple parameters option, which will be savbed to a subdirectory "geomorph_grids" in the directory with the original DEM.  If you want to convert to GeoTiff, either:

Some options (relief, openness) require that a region size be selected. The size is in meters, and converted into the number of grid points needed.  The computations will use a square centered on the point.

Some options (e.g. slope, reflectance, aspect) can be selected from the display option of the DEM display, but have limited modification capability since they are just display modes of the DEM.

Last revision 10/10/2021