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.
IDL> plots_bda,index,data
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).
IDL> mplot,xvals,chan_data,x_spacing,y_spacing