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<div class="moz-cite-prefix">Le 25/01/2024 à 04:41, David Shean a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:4A608C3B-74A3-4C9A-A8B4-C9280D6253F4@uw.edu">
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Hi Even,
<div>Thanks for the pointer to this resource, and for working to
support this important functionality. </div>
<div>Would it make sense to add the -a_coord_epoch option to
gdal_edit.py, so users can directly update the GeoTiff header
for a dataset with known epoch?</div>
</blockquote>
That could indeed be an appropriate addition. Contribution welcome<br>
<blockquote type="cite"
cite="mid:4A608C3B-74A3-4C9A-A8B4-C9280D6253F4@uw.edu">
<div>-David<br id="lineBreakAtBeginningOfMessage">
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<br>
<br>
--</div>
<div>David Shean<br>
Civil and Environmental Engineering<br>
University of Washington<br>
<a
href="https://www.ce.washington.edu/facultyfinder/david-shean"
moz-do-not-send="true">https://www.ce.washington.edu/facultyfinder/david-shean </a><br>
<br>
201 More Hall, Box 352700<br>
3760 E. Stevens Way NE<br>
Seattle, WA 98195-2700<br>
Office: (206) 543-3105, Wilcox Hall 265<br>
Pronouns: he, him, his</div>
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<blockquote type="cite">
<div>On Jan 17, 2024, at 11:40 AM, Even Rouault via gdal-dev
<a class="moz-txt-link-rfc2396E" href="mailto:gdal-dev@lists.osgeo.org"><gdal-dev@lists.osgeo.org></a> wrote:</div>
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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"
moz-do-not-send="true">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>
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</div>
</div>
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<div><br>
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<span class="gmail_signature_prefix">-- </span><br>
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data-smartmail="gmail_signature">
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<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>
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My software is free, but my time generally not.</pre>
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