Yann wrote: > I would like to map the Milky Way stars and run some > analysis on it. > > Is there support for Milky Way and Galaxy coordinate systems > in general in GRASS?
Not specifically, but depending on your reference frame the simple XY and lat/lon+spheroid locations can set up arbitrary Cartesian or polar coordinate systems as you like. fwiw-- Some time ago I had a look at importing a star catalog as an example of working with sparse 3D points in GRASS, but that was earth-centric so a lat/lon location did ok for azimuth and altitude. A big problem there at the time was finding a catalog with a truly FOSS-friendly license. Note GRASS 7 and its wxGUI location wizard have ellipsoid tables and support for the planetary bodies in our solar system. I need help with the final 5% of the python coding to finish that off in the loc'n wizard (see trac). Longitude represented as 0-360 has had support in the GRASS raster engine for a number of years. see also http://grasswiki.osgeo.org/wiki/Planetary_mapping Hamish _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
