For future doc readers: https://github.com/OSGeo/gdal/pull/9211
Le 07/02/2024 à 20:45, Even Rouault via gdal-dev a écrit :
Scott,
I’m trying to create a JPEG2000 file using the JP2ECW driver, but I’m
getting “WriteBlock() not supported…”. The same code works using the
PNM driver.
What am I missing?
This comment in the code
https://github.com/OSGeo/gdal/blob/0255b1d767bbfc6910d8044e37019f1d1ea5a617/frmts/ecw/ecwcreatecopy.cpp#L1653
which basically says that there's some form of Create() support in the
JP2ECW driver but you need to write by scanline from top to bottom.
The PNM, GTiff etc drivers implement full random-writing, which is
what is required typically for gdalwarp. The workaround is either to
modify the way you write the file (if you use the API), or if you use
GDAL tools to write to an intermediate format (GeoTIFF) and then
gdal_translate to JPEG2000 afterwards.
Even
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My software is free, but my time generally not.
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