I got it: http://nsidc.org/data/atlas/epsg_3410.html
On Wed, Jan 23, 2013 at 11:46 AM, Nikolaos Hatzopoulos <[email protected]>wrote: > thanks for the respond, > > Yes you are right it is +proj=cea > I got confused with the GCTP codes > about the datum=WGS84 I am not quite sure the specs that I find from > HDFview are: > > Projection=GCTP_CEA > ProjParams=(6371228,0,0,0,0,30000000,0,0,0,0,0,0,0) > SphereCode=-1 > > > --Nikos > > > On Wed, Jan 23, 2013 at 10:57 AM, Frank Warmerdam <[email protected]>wrote: > >> Nikos, >> >> I see that GCTP Projection 97 is Cylindrical Equal Area. This can >> have a standard parallel and a central meridian (from >> http://www.remotesensing.org/geotiff/proj_list/cylindrical_equal_area.html >> ). >> Without knowing what these are it is hard to do much, but you might >> try it assuming they are zero and zero in which case you would use >> something like: >> >> -s_srs "+proj=cea +datum=WGS84" >> >> If you examine the HDF metadata more carefully you might find more >> information. Initially see what metadata makes it through GDAL with >> gdalinfo. If that doesn't show anything, perhaps try low level HDF >> tools. >> >> If you make the datasource available, and filed a bug it might be >> possible for us to fix ogr_srs_usgs.cpp to handle CEA. In the >> comments I see: >> >> // FIXME: CEA --- Cylindrical Equal Area skipped (Grid corners >> set in meters for EASE grid) >> >> Best regards, >> Frank >> >> >> On Wed, Jan 23, 2013 at 10:20 AM, Nikolaos Hatzopoulos >> <[email protected]> wrote: >> > I have this projection for my nasa hdf file: >> > >> > Coordinate System is: >> > LOCAL_CS["GCTP projection number 97", >> > UNIT["Meter",1]] >> > Origin = (-17334194.000000000000000,7344784.825000000186265) >> > Pixel Size = (25067.525334417932754,-25067.525298634809587) >> > >> > >> > I tried to reporject my image using gdalwrap and I got: >> > >> > ERROR 1: No PROJ.4 translation for source SRS, coordinate >> > transformation initialization has failed. >> > >> > I am reading this: >> > >> http://www.gdal.org/ogr/classOGRSpatialReference.html#a04ab13a2ec4ceffd6f802422f95e8f15 >> > >> > from the array I understand: >> > >> > 9 Transverse Mercator >> > 7 FN >> > >> > >> > >> > how I have to define my -s_srs=????? >> > >> > --Nikos Hatzopoulos >> > >> > _______________________________________________ >> > gdal-dev mailing list >> > [email protected] >> > http://lists.osgeo.org/mailman/listinfo/gdal-dev >> >> >> >> -- >> >> ---------------------------------------+-------------------------------------- >> I set the clouds in motion - turn up | Frank Warmerdam, >> [email protected] >> light and sound - activate the windows | http://pobox.com/~warmerdam >> and watch the world go round - Rush | Geospatial Software Developer >> > >
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