If you're talking about the EAA EU_DEM then PNG isn't a good solution as
the whole raster as to be loaded to access a subset of it, a compressed
TIFF with TILED=YES would be better.
Also, you should not try to scale it down to byte as it would only 255
values, if I remember well the original data is in ctfloat32 so try to
scale it down to int32 for a huge size gain.
Le 15/04/2014 16:51, Nicole Stoffels a écrit :
Thanks Chaitanya!
The problem is reading the source file itself. GDAL is unable to find
any valid pixels. Check if you are using the latest GDAL binaries. Use
"gdalinfo -version".
I just installed the latest gdal-version (1.10.1). But it did not solve
my problems. I still get the same error while trying to display the min
and max.
Use qgis to view the input and output. GIMP can't
handle anything except basic pixel types.
But with qgis I can visualize my original large EU_DEM-files. :)
Best regards
Nicole
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