On lundi 27 mai 2019 17:58:34 CEST Andrea Aime wrote: > Hi Jukka, > thank you for following up. I believe that provides information for the PAM > dataset, which > is normally a sidecar containing statistical information such as > min/max/histograms. > The GDAL metadata TIFF tag instead normally contains other information, > such as scale/offset, > band names, units, and uses a XML that has a different structure. > > Looking into the code there is something around here: > https://github.com/OSGeo/gdal/blob/master/gdal/frmts/gtiff/geotiff.cpp#L1372 > 6
Andrea, If you're looking for the specification of the GDAL metadata TIFF tag (which is different from PAM .aux.xml), then the code will be your best friend as I don't think there's a document describing it, together with experimentation Here's how to set the names of a 2-band TIFF <GDALMetadata> <Item name="DESCRIPTION" sample="0" role="description">my_band_1_name</Item> <Item name="DESCRIPTION" sample="1" role="description">my_band_2_name</Item> </GDALMetadata> The output of gdalinfo will be: Band 1 Block=20x20 Type=Byte, ColorInterp=Gray Description = my_band_1_name Band 2 Block=20x20 Type=Byte, ColorInterp=Gray Description = my_band_2_name The samples with '.' you mention are corrupted. GDAL shouldn't produce such files. Even -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
