<div dir="ltr">Thanks Even! <div><br></div><div>Since the end target isn't geotiff and it does have WKT, maybe I can work with the GeoTools folks to get a solution if I cut geotiff out of the middle.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 26, 2019 at 3:15 PM Even Rouault <<a href="mailto:even.rouault@spatialys.com">even.rouault@spatialys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> Gives the imagery not quite in the correct location. I briefly looked at<br>
> gdal_translate from proj at head and gdal at head, but our tiler is an<br>
> older version of gdal that can read the post "RFC 73: Integration of PROJ6<br>
> for WKT2" info.<br>
<br>
PROJ6 support in GDAL won't help in any way. This is a pure GeoTIFF issue, <br>
since GeoTIFF doesn't support this projection method, and I'm afraid there is <br>
no clean resolution. Recent enough version of GDALs will incorporate a hacky <br>
WKT in a PCSCitationGeoKey with a EXTENSION["PROJ4", ...] as the example you <br>
shown. But I would be very surprised that GeoTools would understand that !<br>
<br>
Actually you might add this use case to this ticket<br>
<a href="https://github.com/opengeospatial/geotiff/issues/56" rel="noreferrer" target="_blank">https://github.com/opengeospatial/geotiff/issues/56</a> :-) if you want a <br>
ultimately clean solution for that. But even using latest WKT version wouldn't <br>
likely help, since as far as I remember, there is no standardized way in the <br>
EPSG dataset to represent the geostationary projection and the sweep <br>
parameter, so this would involve lobying at that level too.<br>
<br>
Even<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature">--<div><a href="http://schwehr.org" target="_blank">http://schwehr.org</a></div></div>