Hi all,
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?
Yann
--
Yann Chemin
Researcher@IWMI
Skype/FB: yann.chemin
Hi all,
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?
Yann
--
Yann Chemin
Researcher@IWMI
Skype/FB: yann.chemin
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
Hi Hamish !
I just submitted to add-ons an adaptation of Meloch craters to
meteorite or meteorite to crater model. It would be soooo good if I
could have support for Mars or Moon. Yes, I have used the 0-360
support with GCM data before (most welcome support at that time).
Is there something I can do to facilitate the finalization of that
port, i will look into trac for info.
Cheers,
Yann
On 1 May 2013 03:06, Hamish <hamish_b@yahoo.com> wrote:
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
--
Yann Chemin
Researcher@IWMI
Skype/FB: yann.chemin