[gdal-dev] gdal create tif, errors with gdaladdo

[Even Rouault]

Hi,

no those warnings don't sound good at all ! The number of overviews should be 
fine too.

Could you precise the version of GDAL you're using and if you have built with 
internal libtiff or external libtiff ?
(Such warnings could happen with older libtiff, especially with TIFF 
compression)
Could you just check gdalinfo -checksum file.tif on your original file before 
running gdaladdo and check that it doesn't throw similar errors ?

Best regards,
Even

Le Thursday 19 March 2009 22:41:53 Stephen Woodbridge, vous avez écrit :
> Hi,
>
> I just created a bunch of tif files from a mrsid file and when I use
> gdaladdo file.tif 2 4 8 16 32 64 128 256
>
> I get over a 1000 errors like:
>
> ERROR 1: n-41-25_0-0.tif:DumpModeDecode: Not enough data for scanline 1536
> ERROR 1: TIFFReadEncodedTile() failed.
> ERROR 1: IReadBlock failed at X offset 12, Y offset 7
> ERROR 1: GetBlockRef failed at X block offset 12, Y block offset 7
> ERROR 1: n-41-25_0-0.tif:DumpModeDecode: Not enough data for scanline 1664
> ERROR 1: TIFFReadEncodedTile() failed.
> ERROR 1: IReadBlock failed at X offset 13, Y offset 7
> ERROR 1: GetBlockRef failed at X block offset 13, Y block offset 7
>
>
>
> Is this because of the number of overviews I requested? ot something
> else? Is it safe to ignore these?
>
> -Steve
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