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Daniel,</div>
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GDAL is well known for its planetary data support, but not necessarily for astronomy-based data.</div>
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<br>
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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).</div>
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astronomy: <a href="https://aladin.cds.unistra.fr/AladinLite/" id="LPlnk223631">https://aladin.cds.unistra.fr/AladinLite/</a><br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);" class="elementToProof ContentPasted1 ContentPasted2">
and even some planetary surfaces: <a href="https://aladin.cds.unistra.fr/AladinLite/planets-explorer/" id="LPNoLPOWALinkPreview_1">https://aladin.cds.unistra.fr/AladinLite/planets-explorer/</a></div>
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best of both worlds (dynamic conversion of HIPs <-> WMS): <a href="https://pypi.org/project/mapproxy-hips/" id="LPNoLPOWALinkPreview_2">https://pypi.org/project/mapproxy-hips/</a></div>
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<br>
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I also just posted this planetary summary (for more GIS-based map servers):</div>
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<a href="https://openplanetary.discourse.group/t/quick-summary-for-planetary-map-servers-mid-2023/639" id="LPNoLPOWALinkPreview">https://openplanetary.discourse.group/t/quick-summary-for-planetary-map-servers-mid-2023/639</a><br>
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<br>
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Good luck,</div>
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Trent</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> gdal-dev <gdal-dev-bounces@lists.osgeo.org> on behalf of Daniel Suson <djsuson@gmail.com><br>
<b>Sent:</b> Saturday, May 13, 2023 11:53 AM<br>
<b>To:</b> gdal-dev@lists.osgeo.org <gdal-dev@lists.osgeo.org><br>
<b>Subject:</b> [EXTERNAL] [gdal-dev] Creating transformed maps with gdal</font>
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<br>
This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding.<br>
<br>
<br>
<br>
I am working on a project that involves displaying astronomical data on<br>
various map projections using C++. I would like to use the gdal library<br>
to accomplish this instead of hard coding the various projections. In<br>
the project I have a matrix representing the sky in RA/dec coordinates<br>
(astronomical equivalent to longitude/latitude) at whatever resolution<br>
is required. The resulting matrix is essentially geodetic in that it has<br>
a constant 2:1 ratio. I would like to take this matrix and create a map<br>
(say using the Mollweide projection as an example) that can then be<br>
displayed on the screen by the program. I've been looking at the c++ api<br>
and have found some candidate functions, but they all use data inputted<br>
from and outputted to files. Can anyone point me to examples that work<br>
with data stored in and written to memory, or else give me some ideas of<br>
where else to look for this within the library?<br>
<br>
Thank you,<br>
<br>
Dan<br>
<br>
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