dshelper_sector::set_sectoring

Source: dataset/helpers/sector/dshelper_sector__set_sectoring.pro

 dshelper_sector::set_sectoring
        Set the sector selections for a rates dataset. This method may
        be ignored if there are streams with unsuitable properties.

 Usage:
        dsid->set_sectoring, sector_list

 Argument:
        sector_list     int     Array with a list of the sectors to be
                                plotted. 

 Keywords:
        all             If set, then display all sectors.
        average         If set, then display just sector averages.
        add_average     If set, then add a sector average plot to a
                        set of selected sectors.
        expand  int     Expand a sectoring map to the specified number
                        of sectors.

 History:
        Original: 19/11/99; SJT
        Moved the average to position 0: 20/12/99; SJT
        Redesign: 27/6/00; SJT
        Add expand keyword: 28/6/00; SJT