Re: [gdal-dev] WriteBlock() not supported using JP2ECW driver?
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 -- http://www.spatialys.com My software is free, but my time generally not. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev -- http://www.spatialys.com My software is free, but my time generally not. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] WriteBlock() not supported using JP2ECW driver?
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 -- http://www.spatialys.com My software is free, but my time generally not. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
[gdal-dev] WriteBlock() not supported using JP2ECW driver?
Hi, 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? Thanks, Scott Disclaimer The information contained in this electronic message and any attachments to this message are intended only for the individual(s) addressed in the message and may contain proprietary and confidential information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender and delete this message. WARNING: Computer viruses can be transmitted via email. The recipient should scan this email before opening it. The company accepts no liability for any damage caused by any virus transmitted by this email. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
