Thanks Even, That does the trick :)
Cheers, Simon On Wed, Mar 12, 2025 at 9:54 AM Even Rouault <even.roua...@spatialys.com> wrote: > > Simon, > > see the ARRAY:IF(DIM=2):BLOCKSIZE=256,256 example of > GDALGroup::CopyFrom() mentioned at > https://gdal.org/en/stable/doxygen/classGDALGroup.html#a28324579902842d7dbd1f93e9698b1ec > > Even > > Le 12/03/2025 à 09:23, Simon Lyngby Kokkendorff via gdal-dev a écrit : > > Hi list, > > > > gdalmdimtranslate is a very handy tool e.g. to translate netCDF > > files to Zarr as it can handle huge files that xarray just chokes on. > > I have a question regarding handling output blocksizes for the Zarr > > format for files with variables of varying dimensions though. For > > example I need to translate a netCDF file with time, z, lat, lon > > dimensions and variables which are either 4D (time, z, lat, lon), 3D > > (time, lat, lon) and 2D (lat, lon). I would like to remap chunksizes / > > blocksizes to better suit my use case. However, it seems that I can > > only specify blocksizes as e.g. -co ARRAY:BLOCKSIZE 2, 2, 128, 128 - > > which will throw an error and skip the variables that don't have 4 > > dimensions. Also, the output doesn't contain the dimension variables > > in this case. Likewise, for 4D variables if I only specify 3 > > blocksizes. > > Have tried this with gdal versions 3.8.4 and 3.4.1 with similar results. > > So the question is if there is any way to specify blocksizes e.g. > > by dimension name? Or if the approach should rather be to just create > > 3 output Zarr folders - one for each variable dimensionality (2D, 3D > > and 4D)? I can of course manually "merge" these folders afterwards. > > > > Best regards, > > Simon > > _______________________________________________ > > 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
