[gdal-dev] gdaladdo don't seem to work..

[Jukka Rahkonen]

Pietro Rossin <pierigis <at> gmail.com> writes:

> 
> 
> I was wrong, it was working slow.But at the end it leaves a big file with
extension .axe. Is this necessary?
> I know pyramids are inside the .aux file..
> Thank you
> Pietro

I guess that after exceeding some 2 GB or 4 GB limit the pyramids are actually
in that big spill file and .aux behaves as an index.

Your data are 1 bit and probably very effectively compressed with CCITTFAX4. It
may be that Erdas style overviews do not compress very well and I would have a
try what happens with TIFF overviews created with something like

gdaladdo -ro -r average --config COMPRESS_OVERVIEW CCITTFAX4 test.tif 2 4 8 16
32 64 128 256


-Jukka Rahkonen-