On Sun, Nov 14, 2010 at 8:41 PM, Markus Neteler <[email protected]> wrote: > On Sun, Nov 14, 2010 at 7:42 PM, nikos <[email protected]> wrote: >> On Sun, 2010-11-14 at 16:35 +0100, Markus Neteler wrote: >>> On Sun, Nov 14, 2010 at 4:01 PM, nikos <[email protected]> wrote: >>> > >>> > >>> > I'm battling to import the 43b3 Product (TRMM perspiration + other >>> >>> (http://disc.sci.gsfc.nasa.gov/precipitation/documentation/TRMM_README/TRMM_3B42_readme.shtml)
You could also use the TRMM tools [1] to dump the data to a raw binary file. Last time I did that I noted that the binary file is rotated by 90°, i.e. north is right and west is up (or north is left and west is down, forgot the rotation direction). >> >> I tried >> >> ./gdal_translate -a_ullr -180 50 -50 180 >> HDF4_SDS:UNKNOWN:"/DIR/OF/TRMM_IMAGE/3B43.060801.6.HDF":1 test.tif >> >> which makes an interesting tif, that is not empty, but when I load it >> with qgis (use psedocolor) its square(?). The image should have a >> 1440/400 ratio. What does gdalinfo HDF4_SDS:UNKNOWN:"/DIR/OF/TRMM_IMAGE/3B43.060801.6.HDF":1 say? There should be 400 rows and 1440 columns, and not vice versa, 1440 rows and 400 columns (suspected 90° rotation mentioned above). > > Wait - AFAIK you need to use "gdalwarp" on it, not gdal_translate. > Hm, there is no coordinate system specified in the hdf, so gdalwarp would only work with -s_srs wgs84 -t_srs <something else than wgs84>. Or translate first, add gcps during translation, then warp? Markus M [1] ftp://disc2.nascom.nasa.gov/software/trmm_software/Read_HDF/READTRMM_V2.tar _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
