Hello, I'm working with Mapserver, trying to serve images stored in PostGIS Raster via WMS using the new version of GDAL PostGIS Raster driver (I'm working to improve it). The images appears misplaced when overview tables are used. The overviews were correctly created, but the driver doesn't serve them in the right way. In other words: it isn't a data problem. It's a driver problem.
I've been re-reading the GDAL driver implementation tutorial, but it only covers the default support in GDAL for external overviews stored in TIFF files. My overviews are stored in PostGIS Raster tables, not TIFF files. I'm looking at geotiff.cpp code. I guess the driver have to fullfill some requirements, like geotiff driver does. My question is: what are the most important parts in order to provide a good overview support, based on the idea that the overviews are raster tables? (Just reading support, so far) Many thanks in advance, -- Jorge Arevalo http://www.krop.com/jorgearevalo _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev