[gdal-dev] Re: strange behaviour with gdalwarp and LZW compression

Stefano Iacovella stefano.iacovella at gmail.com
Wed Mar 7 02:57:05 EST 2012


Eli, Even

thanks a lot both of you

I tried with options

-wo OPTIMIZE_SIZE=YES -of GTIFF -co COMPRESS=LZW

and it works perfectly

Have a nice day

Stefano

2012/3/7 Even Rouault <even.rouault at mines-paris.org>:
> Le mercredi 07 mars 2012 00:48:39, Eli Adam a écrit :
>> Reading further, I learn about OPTIMIZE_SIZE,
>> http://gdal.org/structGDALWarpOptions.html#a0ed77f9917bb96c7a9aabd73d4d06e0
>> 8
>>
>> Can OPTIMIZE_SIZE be set from the command line?
>
> Yes, this is a Warping Option, so you can specify it with the -wo
> OPTIMIZE_SIZE=YES option
>
>>
>> Eli
>>
>> On Tue, Mar 6, 2012 at 3:41 PM, Eli Adam <eadam at co.lincoln.or.us> wrote:
>> > Stefano,
>> >
>> >      I think that is expected.  You can read a little more about it
>> > and a recommended work around (VRT) here,
>> > http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp#GeoTIFFoutput-coCOMPRES
>> > Sisbroken
>> >
>> > Bests, Eli
>> >
>> >>> The problem arise if I insert the options -co COMPRESS=LZW at the
>> >>> warping. The process end successfully but the resulting geotiff is 6
>> >>> times the size of the original one!
>>
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