Hi RSyaoxin, Il 15/05/2011 14:46, RSyaoxin ha scritto: > Hi,I want to calibration the ENVISAT ASAR DATA(.N1 Format). I need to get > it's main processing parameters,such as > calibration_factors[0].ext_cal_fact[0],first_line_tie_point_angles[0-10],and > I wrote: CString > sDomain=m_pDataset->GetMetadataItem("MAIN_PROCESSING_PARAMS_ADS_CALIBRATION_FACTORS[0].EXT_CAL_FACT[0]");but > I can't get result. > However, "CString sDomain=m_pDataset->GetMetadataItem("SPH_FIRST_MID_LAT")" > is right.That's Why?How should I go to get necessary information? > I turn to Anybody who once did this job for some advice. Thank you! > Kind regards. >
It seems that the envisat driver do not extracts all metadata from all ENVISAT records. It just exposes MPH, SPH and GCPs http://www.gdal.org/frmt_various.html#Envisat >From my point of view it would be very useful to be able to have access to a richer set of metadata from GDAL (at east for SAR products). If you are only interested in ENVISAT then you could give a try to https://github.com/bcdev/epr-api that give you full access to the ENVISAT products eve if, IMHO, it is not so handly as GDAL for imagery IO. Maybe you can use them both: EPR for metadata and GDAL for imagery. best regards -- Antonio Valentino _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev