Geology/Geography Options

Tab on Options form.



Focal Mech

Koppen/Daylight Geography options

Allow complex magetic anomaly profiles.

Ternary percentages must sum to 100%: option in the ternary diagram plots of databases.


Force downloads of the data sets for the geology and physical geography flavors of the program.  This should only be needed if you did not start those program versions, or if the files that were downloaded became corrupted.

  • Geology data
  • Geography data
  • ETOPO1/Blue Marble
  • Geoid: this has grids with EGM96, EGM2008, and shift from 96 to 2008.
  • Natural Earth Vector World Outlines.


Last revision 1/26/2023