Planetary mapping
GIS Support
- 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 g.setproj 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 here.
- GRASS 7 now includes the planetary ellipsoid tables and support is present in the wxGUI location wizard.
- GRASS 7 now recognizes ISIS3.x installation and runs automatically the ISIS-GRASS bridge, Startup banner and CLI prompt are set to ISIS-GRASS. ISIS commands are available through the ISIS-GRASS command prompt.
Open Issues
- r.out.gdal exports 'unknown' ellipsoids / datums, and also the reference meridian is named 'Greenwich'
Example of the use of GRASS GIS in Planetary Research
GRASS ps.map output as published in an article in the journal Science.
![](/w/images/Psmap_on_sciencemag.png)
Data
Data summary (1999):
http://publish.uwo.ca/~pjstooke/mapsummy.txt
Modules
- r.in.gdal will handle HDF and netCDF and many many more formats
- r.in.bin will load raw binary data
- see also the GRASS and GMT wiki page for interfacing with GMT Mapping Tools
- r.crater 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.
- d.anaglyph is an addon module for creating 3D stereo images. (see Stereoscopic analysis and Stereo anaglyphs wiki pages)
- Isis2grass set of tools to make Isis > 3.3.1 and GRASS work together. g.isis3mt: will output an ISIS3 Maptemplate according to the one currently used in the GRASS Location. isis-grass: the startup script that will set-up the common command line interface from where to call both ISIS3 and GRASS commands.
https://bitbucket.org/afrigeri/isisgrass
Mars topography
![](/w/images/Olympus_mons-medium.jpg)
See tutorial in GRASSNews volume 1:
- Global dataset of bathymetry and topography. GRASS Newsletter, 1:8-11, August 2004. ISSN 1614-8746.
Screenshots
![](/w/images/Mars1ana_crop.jpg)
See also
- 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.
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