ISG – International Service for the Geoid
New in version 3.1.
Driver short name
Driver built-in by default
This driver is built-in by default
Supports reading grids in the International Service for the Geoid text format, used for number of geoid models at http://www.isgeoid.polimi.it/Geoid/reg_list.html
Format specification is at http://www.isgeoid.polimi.it/Geoid/ISG_format_20160121.pdf
NOTE: Implemented as