[Qgis-user] Import and reference HDF4 data

[SCHULZ Wolfgang]

Wow - thanks a lot. This was exactly what I was searching for.
Wolfgang

> -----Ursprüngliche Nachricht-----
> Von: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-
> bounces at lists.osgeo.org] Im Auftrag von Andre Joost
> Gesendet: Montag, 11. August 2014 18:22
> An: qgis-user at lists.osgeo.org
> Betreff: Re: [Qgis-user] Import and reference HDF4 data
> 
> Am 11.08.2014 15:27, schrieb SCHULZ Wolfgang:
> > Hello, I want to import the following data (hdf format) into QGIS:
> > http://ghrc.nsstc.nasa.gov/hydro/search.pl?method=quick&keyword=HRFC&c
> > ontext=Any+field
> >
> >  Any idea how to georeference it? I can import it. The interesting
> > layer of the hdf4 file is the first layer. The layer should contain
> > data -180 to +180 longitude and -90 to +90 latitude in 0.5 degree
> > resolution. How can I tell to QGIS the limits of the data layer for a
> > hdf4 file?
> >
> 
> 
> If you query the subdatasets of the HDF file with gdalinfo
> LISOTD_HRFC_V2.3.2013.hdf gdalinfo
> HDF4_SDS:UNKOWN:"LISOTD_HRFC_V2.3.2013.hdf":0
> gdalinfo HDF4_SDS:UNKOWN:"LISOTD_HRFC_V2.3.2013.hdf":1
> gdalinfo HDF4_SDS:UNKOWN:"LISOTD_HRFC_V2.3.2013.hdf":2
> 
> you learn that SDS 1 contains the longitudes from -180 to +180, and SDS
> 2 the latitudes from -90 to +90. Unfortunately, the GDAL driver is not able to
> use these coordinate infos.
> 
> I got around it by extracting the SDS 0 and applying the corner coordinates with
> GDAL:
> 
> gdal_translate -a_srs EPSG:4326 -a_ullr -180 -90 180 90 -of "Gtiff"
> HDF4_SDS:UNKOWN:"LISOTD_HRFC_V2.3.2013.hdf":0 test.tif
> 
> HTH,
> André Joost
> 
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