A plot with a spectrum for each channel stacked one above the other
may be produced with PLOTS_BDA; the user can page through the modes
if more than one is passed in the arrays to the routine.
Many spectra from the same channel may be plotted on a page as a matrix with the routine BCS_MULTI.
IDL> bcs_multi,index,data [,chan=n, etc.]
MPLOT allows the user to overplot many spectra from the same channel, optionally displacing each one in the x- and/or y-direction. Note that the BCS channel must have been extracted before calling this routine (see earlier in this section).