Billy, Yes, gdalwarp will use the srs from the file if one is not specified, providing it is valid.
kss On Wed, May 16, 2012 at 8:13 AM, Billy Newman <[email protected]> wrote: > If I do not provide a source spatial reference to gdalwarp will the > information in the geotiff be used instead? ie. gdalwarp -t_srs > 'EPSG:4326' input.tif output.tif? > > I do not have a real example because I do not have the file I am working > with on this computer. But an example gdalinfo would be: > > PROJCS["NAD27 / UTM zone 11N", > GEOGCS["NAD27", > DATUM["North_American_Datum_1927", > SPHEROID["Clarke 1866",6378206.4,294.978698213901]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433]], > PROJECTION["Transverse_Mercator"], > PARAMETER["latitude_of_origin",0], > PARAMETER["central_meridian",-117], > PARAMETER["scale_factor",0.9996], > PARAMETER["false_easting",500000], > PARAMETER["false_northing",0], > UNIT["metre",1]] > > So would my above example work when trying to convert this projection to > EPSG:4326, or do I need to specify the source spatial reference and/or > other parameters. > > Thanks > Billy > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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