read_lanfile

Source: hsio/read_lanfile.pro

 READ_LANFILE 
        Read data from a file.

 Usage:
        read_lanfile, findex, data, nread, nact, nfile

 Arguments:
        findex  Long    input   Index of file, as returned by open_lanfile
        data    Byte    output  Array with data.
        nread   Long    input   Maximum number of bytes to read to "data"
        nact    Long    output  Number of bytes read to "data"
        nfile   Long    output  Number of bytes read from file (<0 if error)

 History:
        IDL version (after C) 25/11/03: SJT