[gdal-dev] get different result when use different parameters

Chaitanya kumar CH chaitanya.ch at gmail.com
Tue May 11 02:02:42 EDT 2010


I couldn't open the link.
Try "gdalinfo -mm des.png" on both the output images. I think they will both
give the same output. UInt16 should give a dark image unless you perform
histogram equalization on it.

2010/5/11 weixj2003ld <weixj2003ld at 163.com>

> I download a elevation data (SRTM,GTOPO30) from
> http://glcfapp.glcf.umd.edu:8080/esdi/index.jsp
>  use
> gdal_translate -b 1 -of PNG -ot Byte source.tif des.png
> and
> gdal_translate -b 1 -of PNG -ot UInt16 source.tif des.png
> differently,
> with parameter 'UInt16',I get a black picture,with Byte,get a different
> one,why?
> BTW,I want to get a png file from elevation data(.tif),must I use command
> gdal_translate?
> Thk u in advance.
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Best regards,
Chaitanya kumar CH.
/tʃaɪθənjə/ /kʊmɑr/
17.2416N 80.1426E
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