[Gdal-dev] questions to overviews and tiles

[Christian.Strobl at dlr.de]

hi list,

i have only a few user questions. i am building tiles and overviews for
a tiff-file

#Tiles
gdal_translate -co "TILED=YES" image_in.tif image_out.tif
#Overviews
gdaladdo -r average image_out.tif 2 4 8 16

now my questions:
1) has the order of the operations an influence to the result. it seems
that the tiling command destroys the overviews
2) is there any possibility to identify if a tiff-file has inner tiling
sets. i don't see any difference with gdalinfo

thanks and greetings from munich
christian