dem_geoid improvements #94

oleg-alexandrov opened this Issue Nov 28, 2013 · 1 comment


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  • Add option to allow the user to specify the geoid to use (for now we decide it uniquely based on datum, so WGS1984 -> EGM96, D_MARS -> MOLA, and NADD83 -> NAVD88). This will allow the user to choose the EGM2008 geoid for the WGS1984 datum and not just EGM96. Of course, check that the geoid the user wants is compatible to the underlying datum, so don't use EGM2008 with D_MARS.
  • Investigate if using JP2 compression (in addition or instead of LZW) reduces the size of geoids we ship, which currently vary in size from 2 to 37 MB.

This was implemented a few months ago.

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