[Gdal-dev] another gdalwarp and no data values question

[Matthew Perry]

Todd,

On 7/14/06, Todd Fagin <tfagin at coordinatesolutions.com> wrote:
> I am currently warping a three-band GTiff from UTM Zone 14 to Albers Equal
> Area using gdal-1.3.2.  I set both the source and destination NoData values
> to 0 and everything seems to run fine.  When I do gdalinfo, for instance, it
> shows that 0 is the NoData value for all three bands.  However, when I view
> the image with third-party software (e.g. ESRI), it does not recognize 0 as
> NoData (or anything as NoData for that matter).
>

I've found that ESRI products don't really recognize some of the
GeoTIFF tags written by GDAL. I've had better luck with .img files
(HFA format) and ascii grids (AAIGrid) for this purpose.

-- 
Matt Perry
perrygeo at gmail.com
http://www.perrygeo.net