[Gdal-dev] How does one remove Overviews?

Frank Warmerdam warmerdam at pobox.com
Fri Sep 30 14:01:03 EDT 2005


On 9/30/05, Mike Logan <mlogan at mail.arc.nasa.gov> wrote:
>
>
> On Sep 30, 2005, at 9:41 AM, Frank Warmerdam wrote:
>  the new file should be similar to the original but not have the overviews.
>
>
> "similar" ???  8-)

Mike,

A variety of things can change since gdal_translate does not try to
preserve aspects of the original file that are not part of the GDAL
data model.  So for instance, if the input file was tiled, the output
file would be stripped unless you explicitly request stripped since
the GeoTIFF writer defaults to stripped.

Likewise, the coordinate system is normallized internally into WKT
format and then converted back to geotiff format.  So lots of little
things could be changed around, but the output file should be
*essentially* the same.

Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent




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