weixj2003ld wrote:
Thk u for your detail reply.
1.Now,I have a DEM(.img) file,and its band number is 1.When I use
'gdal_translate -b 1 -of PNG old.img new.png' to create a png file(I
think its contains height map infomation,is it?).the error 'Warning
6:PNG driver doesn't support data type Int16.Only eight bit<Byte>' and
sixteen bit<Uint16> bands supported.Defaulting to Byte.
Wei,
I would suggest converting to the supported type.
eg.
gdal_translate -of PNG -b 1 -ot UInt16 old.img new .png
2.When I use 'gdal_translate -b 1 -of JPEG old.img new.jpg',the error
'JPEG doesn't support data type Int16. Only eight and twelve bit bands
supported<Mk1 libjepg>'
Depending on your intentions, it might be appropriate to rescale the
DEM data to 8bit forvisualization purposes.
gdal_translate -scale -ot Byte -of JPEG -b 1 old.img new.jpg
I would encourage you to spend a bit more time reading over the commandline
options documentation for gdal_translate.
Best regards,
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