"Small Language Mode" LOL On Fri, 4 Jul 2025 at 12:21, Even Rouault via gdal-dev < gdal-dev@lists.osgeo.org> wrote:
> Hi Michael, > > I guess this is finally the perfect use case we were waiting for to find a > good reason to embed a Small Language Model within GDAL to figure out what > are the columns and lines axis. In the meantime, the boring > https://github.com/OSGeo/gdal/pull/12700 will fix it > > Even > Le 04/07/2025 à 00:48, Michael Sumner via gdal-dev a écrit : > > I'm confused about the orientation of this in 2D mode 1485x1272 is > correct, with 122 bands. > > (requires earthdata auth) > > gdal raster info "/vsicurl/ > https://obdaac-tea.earthdatacloud.nasa.gov/ob-cumulus-prod-public/PACE_OCI.20250501T234515.L2.SFREFL.V3_0.nc"; > --output-format text | grep /rhos > # SUBDATASET_1_NAME=NETCDF:"/vsicurl/ > https://obdaac-tea.earthdatacloud.nasa.gov/ob-cumulus-prod-public/PACE_OCI.20250501T234515.L2.SFREFL.V3_0.nc > ":/geophysical_data/rhos > # SUBDATASET_1_DESC=[1485x1272x122] /geophysical_data/rhos (32-bit > floating-point) > > If we drill into the rhos sds X becomes unrolled as the 1485 bands: > > gdal raster info "vrt:///vsicurl/ > https://obdaac-tea.earthdatacloud.nasa.gov/ob-cumulus-prod-public/PACE_OCI.20250501T234515.L2.SFREFL.V3_0.nc?sd_name=/geophysical_data/rhos"; > --output-format text | grep "Size" > #Size is 122, 1272 > > We can (redundantly??) cast via mdim to get 1485x1272, but then we've lost > the geolocation arrays: > > gdal raster info "vrt:///vsicurl/ > https://obdaac-tea.earthdatacloud.nasa.gov/ob-cumulus-prod-public/PACE_OCI.20250501T234515.L2.SFREFL.V3_0.nc?transpose=/geophysical_data/rhos:0,1"; > --output-format text | grep "Size" > #Size is 1485, 1272 > > At any rate in the default case the geolocation arrays don't match the > data orientation. > > Cheers, Mike > > > -- > Michael Sumner > Ordinary Member, Streets People Love Hobart Association > Research Software Engineer > Australian Antarctic Division > Hobart, Australia > 0438489030 > e-mail: mdsum...@gmail.com > > _______________________________________________ > gdal-dev mailing > listgdal-dev@lists.osgeo.orghttps://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 >
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