SET SPW

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SET SPW

            CLIC\SET  SPW  CLIC\SET  SPW  n1  n2  ...  [/WINDOW f1 l1 f2 l2 ...]
        [/NOSELECT]
            CLIC\SET SPW LINE|CONT
            CLIC\SET SPW ALL
            Selects the spectral windows for which data  will  be  displayed  by
        command  PLOT.  Valid  codes  are continuum spw numbers (C001, C002, ...
        C008) or line spw numbers (L001, L002, ... L008). These are logical num-
        bers, so one should select e.g. L01 to L04 if four correlator units were
        used, independentely from the physical units actually used.  This  is  a
        classical trap, especially with the old receiver system (<2007): if e.g.
        units 1 to 5 were used on Receiver 1 and units 6 to 8 on Receiver 2, the
        corresponding spw will be L01 to L05 for the Receiver 1 scan, and L01 to
        L03 for the Receiver 2 scan.

        Spectral windows may be grouped by typing e.g. "SET SPW n1 to n2 and  n3
        n4".  Here,  two quantities will be plotted. The first one is either the
        average of spw n1 to n2 and n3 (in time mode), or the  concatenation  of
        spectral  data  from  spw n1 to n2 and n3 (in spectral mode). The second
        quantity plotted is spw n4.

        SET SPW LINE|CONT will switch all spw to their  line/continuum  counter-
        part,  e.g.  L01  to  L04 will be changed to C01 to C04 by SET SPW CONT.
        Done by SET X I_F

        SET SPW n1 /NOSELECT will select spectral window n1 while keeping previ-
        ous  selection  mode  (i.e. BB or IF selection) which allows to select a
        high-spectral resolution spectral window for delay  determination  (that
        needs  BB or IF selection). This will update the baseband or IF value if
        necessary.

        A number of useful shortenings are available:

          - SET SPW ALL will automatically select all the subbands in the  first
            scan  of the current index, for each command accessing the data. The
            subbands are concatenated (equivalent to e.g.  SET SPW L01 to L06).