rate_dataset::set_homogeneity_limit

Source: dataset/rate/rate_dataset__set_homogeneity_limit.pro

 rate_dataset::set_homogeneity_limit
        Set the level of mismatch tolerable in overplotted streams in
        a rate dataset.

 Usage:
        dsref -> set_homogeneity_limit,limit

 Argument:
        limit   int     input   The level to be tolerated.
                                0 - only truly matched streams will
                                   overlay
                                1 - Ignore /nuc or lack of energy
                                   range in unit
                               2 - "Thug mode" allow anything to be
                                   overlayed.

 Limitations:
        UDS units aren't very intelligently handled in any of this
        (e.g. c/s and counts/second are seen as different).

 History:
        Original: 27/4/01; SJT