Le 25/01/2024 à 04:41, David Shean a écrit :
Hi Even,
Thanks for the pointer to this resource, and for working to support
this important functionality.
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?
That could indeed be an appropriate addition. Contribution welcome
-David
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On Jan 17, 2024, at 11:40 AM, Even Rouault via gdal-dev
<gdal-dev@lists.osgeo.org> wrote:
Hi,
cf test_tiff_write_coordinate_epoch() in
https://github.com/OSGeo/gdal/blob/3a9541d19f2df52f1e66dacfa33878531a5f2c58/autotest/gcore/tiff_write.py#L9575
On the command line you might use: gdal_translate in.tif out.tif
-a_coord_epoch XXXX.YYY
Even
Le 17/01/2024 à 20:20, Glen Rice - NOAA Federal via gdal-dev a écrit :
Hello,
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?
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.
For reference we looked at the following links:
https://gdal.org/user/coordinate_epoch.html
https://github.com/opengeospatial/geotiff/issues/78
https://github.com/opengeospatial/geotiff/pull/99
https://github.com/OSGeo/libgeotiff/blob/master/libgeotiff/geokeys.inc
Thanks for any help,
Glen and Barry
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Glen Rice
National Bathymetric Source
Hydrographic Systems and Technology Branch
Office of Coast Survey / Coast Survey Development Laboratory
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