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I found to ways to read aster metadata in envi (hdf format). 1.- using "envi_file_query" to read a particular attribute ; set the name of the file FILE_NAME='link to .hdf' ; open data as aster image envi_open_data_file, FILE_NAME, /aster, r_fid=fid ;query the metadata inserted in the hdf (global attributes) envi_file_query, fid[0], nb=nb, ...

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