Plot shows the effect.
Export grid creates a new grid, with the value you want. All other points will be 0.
Masking by category. This allows edits of the DEM/grid based on category membership. This will be in memory; to save, you must save the DEM/grid. Reload the DEM/grid to undo the mask.
- Mask cat in: in the DEM/grid, all points that meet the single category will be retained, and all others removed.
- Mask cat out: in the DEM/grid, all points that meet the single category will be removed.