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<p>Hi,</p>
<p>cf test_tiff_write_coordinate_epoch() in
<a class="moz-txt-link-freetext" href="https://github.com/OSGeo/gdal/blob/3a9541d19f2df52f1e66dacfa33878531a5f2c58/autotest/gcore/tiff_write.py#L9575">https://github.com/OSGeo/gdal/blob/3a9541d19f2df52f1e66dacfa33878531a5f2c58/autotest/gcore/tiff_write.py#L9575</a></p>
<p>On the command line you might use: gdal_translate in.tif out.tif
-a_coord_epoch XXXX.YYY</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 17/01/2024 à 20:20, Glen Rice - NOAA
Federal via gdal-dev a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CAGm0ZKdFgWQ3t7ZdHUr2idj5ndvokZ87xgyLZfaj3bW3a6V2sg@mail.gmail.com">
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<div>Hello,</div>
<div><br>
</div>
<div>We are trying to create geotiffs from Python and specify an
epoch for a dynamic CRS. Is there a way to do this
from python or a command line utility?</div>
<div><br>
</div>
<div>We see the pull request adding CoordinateEpochGeoKey (5120)
and expect I could print the information from gdalinfo if I
had an example file. If we were in C/C++ then we could use
libgeotiff and GTIFKeyGet( ). However we are in Python and we
don't see how to write either the CoordinateEpochGeoKey, or
even a generic geokey, into a geotiff.</div>
<div><br>
</div>
<div>For reference we looked at the following links:</div>
<div><a href="https://gdal.org/user/coordinate_epoch.html"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://gdal.org/user/coordinate_epoch.html</a><br>
</div>
<a href="https://github.com/opengeospatial/geotiff/issues/78"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://github.com/opengeospatial/geotiff/issues/78</a>
<div><a href="https://github.com/opengeospatial/geotiff/pull/99"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://github.com/opengeospatial/geotiff/pull/99</a><br
clear="all">
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr"><a
href="https://github.com/OSGeo/libgeotiff/blob/master/libgeotiff/geokeys.inc"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://github.com/OSGeo/libgeotiff/blob/master/libgeotiff/geokeys.inc</a><br>
</div>
<div dir="ltr">
<div><br>
</div>
<div>Thanks for any help,</div>
<div>Glen and Barry</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div><br>
</div>
<span class="gmail_signature_prefix">-- </span><br>
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data-smartmail="gmail_signature">
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<div>
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<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr"><font color="#999999">Glen Rice</font></div>
<div><font color="#999999">National Bathymetric
Source</font></div>
<div dir="ltr"><font color="#999999"><span
style="font-size:12.8px">Hydrographic
Systems and Technology Branch</span><br>
</font></div>
<div dir="ltr"><font color="#999999">Office of
Coast Survey / Coast Survey Development
Laboratory</font></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
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My software is free, but my time generally not.</pre>
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