[gdal-dev] Creating .ovr files with gdalwarp/lanczos

[Robb K. Wright]

For my data/data type (8-bit indexed images), the lanczos resampling 
method provides by far the best visual look for overviews – but gdaladdo 
doesn’t support this type.

Does anybody have a way to use gdalwarp to create .ovr files?

Robb