- GRASS lat/lon regions may be used as 0-360 longitude, not just 180 east+west.
- In GRASS 6 you can set and add custom ellipsoids, see the here. module. Permanently adding custom ellipsoids can be done by hand, the config tables for that are plain self-documenting text files, so reasonably easy to edit. An ellipse table with planetary spheroids (to put as $GISBASE/etc/*.table files) is available
- GRASS 7 now includes the planetary ellipsoid tables and support is present in the wxGUI location wizard.
- exports 'unknown' ellipsoids / datums, and also the reference meridian is named 'Greenwich'
Example of the use of GRASS GIS in Planetary Research
GRASS article in the journal Science.output as published in an
Data summary (1999):
- many many more formats will handle HDF and netCDF and
- will load raw binary data
- see also the GRASS and GMT wiki page for interfacing with GMT Mapping Tools
- is an addon module for GRASS 7 which estimates the size of a gravity dominated impact crater, or alternatively works backwards to estimate the size of the projectile that made it.
- Stereoscopic analysis and Stereo anaglyphs wiki pages) is an addon module for creating 3D stereo images. (see
See tutorial in GRASSNews volume 1:
- Global dataset of bathymetry and topography. GRASS Newsletter, 1:8-11, August 2004. ISSN 1614-8746.
- Frigeri, A, Hare, T, Neteler, M., Coradini, A, Federico, C, Orosei, R. (2011). A research environment for digital planetary data processing and mapping using ISIS and GRASS GIS. Planetary and Space Science, 59(11-12), pp.1265-1272 [ DOI | PDF ]
- these just define the simple reference ellipsoids, so dx=dy=dz=0.
- GRASS currently uses the IAU2000 definitions in the ellipse.table.solar.system file.