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Hi Javier,<br>
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<div>- GeoTIFF is using its own tags, not WKT<br>
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==> ESRI has actually an extension (supported by GDAL) where
they feed ESRI WKT in the PCSCitationGeoKey tag. cf
<a class="moz-txt-link-freetext" href="https://github.com/opengeospatial/geotiff/issues/56#issuecomment-451130281">https://github.com/opengeospatial/geotiff/issues/56#issuecomment-451130281</a><br>
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<div>- Geopackage with this extension <a
href="https://www.geopackage.org/guidance/extensions/wkt_for_crs.html"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.geopackage.org/guidance/extensions/wkt_for_crs.html</a></div>
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==> WKT1 is part of the core standard. The extension is for
additional WKT:2015 support . And the latest GeoPackage 1.4 spec
also allows WKT:2019<br>
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<div>- PAM file in GDAL, but that is cheating ;)<br>
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<p> ==> almost an industry standard. It has been supported by
ArcGIS for decades
(<a class="moz-txt-link-freetext" href="https://desktop.arcgis.com/fr/arcmap/latest/manage-data/raster-and-images/auxiliary-files.htm">https://desktop.arcgis.com/fr/arcmap/latest/manage-data/raster-and-images/auxiliary-files.htm</a>).</p>
<p>"grep -r exportToWkt frmts ogr/ogrsf_frmts" in GDAL also shows:</p>
<p>- netCDF. crs_wkt attribute to the CF CRS encoding<br>
- PDF: in GeoPDF (I don't remember if it is the ISO or OGC Best
Practice encoding. but it is the ESRI WKT variant I believe)<br>
- ArcInfo ASCII Grid: ESRI WKT in a .prj<br>
- Oracle GeoRaster: in their spatial_ref_sys table or equivalent.
Oracle WKT: an antique & unique sub-dialect of WKT1<br>
- BAG<br>
- SAGA<br>
- Erdas Imagine. ESRI WKT<br>
- TileDB. WKT1 if PROJJSON not available in a (likely GDAL
specific) attribute<br>
- MySQL. WKT1 in spatial_ref_sys table<br>
- PostGIS. WKT1 in spatial_ref_sys table<br>
- ESRI FileGeodatabase: ESRI WKT<br>
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<div>See that I am looking for formats that store some geo-data,
and use WKT to define the CRS (inside or next to it)</div>
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<div>Bonus for a "storage format" that uses/supports WKT2!<br>
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<p>- FlatGeoBuf, although I realize the spec at
<a class="moz-txt-link-freetext" href="https://github.com/flatgeobuf/flatgeobuf/blob/master/src/fbs/header.fbs#L63">https://github.com/flatgeobuf/flatgeobuf/blob/master/src/fbs/header.fbs#L63</a>
isn't super explicit, but GDAL writes WKT:2019 into it</p>
<p>- Zarr. in a GDAL's extension for CRS support</p>
<p>Even</p>
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<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-freetext" href="http://www.spatialys.com">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
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