Hello, I need to prepare a grid file to transform some airborne data.
I tried to follow description https://proj.org/en/stable/specifications/geodetictiffgrids.html#geodetictiffgrids and validated the grid with tool from https://github.com/OSGeo/PROJ-data/tree/master The grid file is placed in /usr/share/proj directory. But when I try to test the horizontal gridshift I get following error echo 5601804.80015816 6155138.44865926 291.032677173227 | cct -z0 -t0 > +proj=hgridshift +grids=cz_jtsk.tif > proj_create: Error 1029 (File not found or invalid): hgridshift: could > not find required grid(s). > cct: Bad transformation arguments - (File not found or invalid) > 'cct -h' for help Other grid file from the same directory can be recognized. Is it possible to indicate why the grid is not recognized? The grid file is accessible from [https://res.cdn.office.net/assets/mail/file-icon/png/photo_16x16.png]cz_jtsk.tif<https://uvgz-my.sharepoint.com/:i:/g/personal/pikl_m_czechglobe_cz/EWbKrKo-qRpOqBVPL8_1a1kBJKEnOQozCGyqpuPGYXos8Q?e=E2sd0j> Thank you very much. Miroslav
_______________________________________________ PROJ mailing list PROJ@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/proj
![https://res.cdn.office.net/assets/mail/file-icon/png/photo_16x16.png]cz_jtsk.tif](https://res.cdn.office.net/assets/mail/file-icon/png/photo_16x16.png]cz_jtsk.tif){kind=link}