weixj2003ld, First you have to locate the corner pixels corresponding to the lat/longs you indicated. Go through (http://www.gdal.org/ogr/osr_tutorial.html) to do that. Use "WGS84" system for lat/longs.
Use GDALRasterIO() (http://www.gdal.org/gdal_tutorial.html) to retrieve the pixels from the required area. 2010/6/2 甘肃。思远 <[email protected]> > I want to get(download) the satellite photo height data(maybe .img or > dem,I think) of the two following areas,who help me? > > > 1. Latitude : 44.750373989-----44.879927098 > > Longitude: 86.797943335------86.932148806 > > 2. > > Latitude 41d38'34''N ------41d50'12''N > > Longitude 81d29'35''E------81d37'38''E > Thank u in advances. > > > ------------------------------ > 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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