050058 : Missing HILLSHADE keyword.

Description

A hillshade field can be written containing a brightness value for each triangle. The HILLSHADE keyword must be included but is currently missing.

Solution

Enter the HILLSHADE keyword, followed by the azimuth and altitude. Leave these values blank to use the defaults. The position of the light source defaults to the northwest, with an azimuth of 315 degrees and an altitude of 45.