Hi, I feel that gdaladdo is not working optimally with any bigger rasterlite tables. For example for my 153600x249600 pixel sized test image the initial write into rasterlite took 3 hours and 10 minutes while adding overviews with gdaladdo took 10 hours. Gdaladdo seems to use remarkable much time every time it has finished with creating one overview layer. In addition, the creation of the last overview layers does not feel as much faster than I would have guessed keeping in mind that the number of tiles to write goes 3/4 down at each step.
I put my test image available for testing http://latuviitta.org/documents/t80.tif (550 MB, deflate compressed tiff) I will keep it on a server for a week or so. Commands I used were: gdal_translate -of rasterlite -co driver=png t80.tif t80.sqlite gdaladdo rasterlite:t80.sqlite,table=t80 2 4 8 16 32 64 128 256 512 1024 I tried to compare times with Rasterlite utilites rasterlite_load and raster_pyramid but they both failed totally with my test image. -Jukka Rahkonen- _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
