[gdal-dev] [EXTERNAL] Creating transformed maps with gdal

[Hare, Trent M]

Daniel,
   GDAL is well known for its planetary data support, but not necessarily for astronomy-based data.

For RA/DEC coordinates you might want to look into using HIPs tiles and interfaces like Aladin Lite (lots of dynamic projection support in the interface, use the pull-down in the top right).
astronomy: https://aladin.cds.unistra.fr/AladinLite/
and even some planetary surfaces: https://aladin.cds.unistra.fr/AladinLite/planets-explorer/
best of both worlds (dynamic conversion of HIPs <-> WMS): https://pypi.org/project/mapproxy-hips/

I also just posted this planetary summary (for more GIS-based map servers):
https://openplanetary.discourse.group/t/quick-summary-for-planetary-map-servers-mid-2023/639

Good luck,
Trent

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From: gdal-dev <gdal-dev-bounces at lists.osgeo.org> on behalf of Daniel Suson <djsuson at gmail.com>
Sent: Saturday, May 13, 2023 11:53 AM
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Subject: [EXTERNAL] [gdal-dev] Creating transformed maps with gdal



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I am working on a project that involves displaying astronomical data on
various map projections using C++. I would like to use the gdal library
to accomplish this instead of hard coding the various projections. In
the project I have a matrix representing the sky in RA/dec coordinates
(astronomical equivalent to longitude/latitude) at whatever resolution
is required. The resulting matrix is essentially geodetic in that it has
a constant 2:1 ratio. I would like to take this matrix and create a map
(say using the Mollweide projection as an example) that can then be
displayed on the screen by the program. I've been looking at the c++ api
and have found some candidate functions, but they all use data inputted
from and outputted to files. Can anyone point me to examples that work
with data stored in and written to memory, or else give me some ideas of
where else to look for this within the library?

Thank you,

Dan

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