[gdal-dev] gdawrap nodata value

Frank Warmerdam warmerdam at pobox.com
Fri Nov 19 17:14:00 EST 2010

Nikolaos Hatzopoulos wrote:
> we will try to convert the projection:
> gdalwarp -srcnodata "-3000" -dstnodata "-3000" -t_srs "EPSG:4326" -r 
> near evi.tif test.tif
> Band 1 Block=8434x1 Type=Int16, ColorInterp=Gray
>   Min=-1958.000 Max=9866.000
>   Minimum=-1958.000, Maximum=9866.000, Mean=1838.460, StdDev=1460.598
>   Metadata:
>     STATISTICS_MEAN=1838.4595819714
>     STATISTICS_STDDEV=1460.5982146014
> NoData value is not defined


I just tried:

    gdalwarp utm.tif -dstnodata 255 out.tif

and the nodata value was set properly on out.tif with trunk, gdal-1.7 and
gdal-1.6.  Is it possible that test.tif already existed when you ran the
gdalwarp command?  It won't be recreated and some options might have no
effect when the output file already exists.

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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