Mark Land Cover Categories as Missing

This can be slow.  A faster option is described under NLCD manipulation.

Menu choice on the Edit menu  available with a DEM available for the active map window. 

Pick NLCD-2001 for the area.  

The program will mask the selected NLCD categories on the map, and then remove them from the DEM.

Manually save  DEM.

SRTM DEM with Tiger data overlaid.  This is SRTM-1, so there are some data voids.

NLCD-2001 of approximately the same area.  It does not match exactly because of projection differences.
Selection of terrain categories to mask. Categories in the enable box will be marked missing in the grid.

Results of masking--missing data shown in black.


Last revision 8/23/2009