weixj2003ld, 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 <[email protected]> > 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. > > > > > ------------------------------ > 网易为中小企业免费提供企业邮箱（自主域名） <http://ym.163.com/?from=od3> > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9848167848 17.2416N 80.1426E
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