SMOOTH

 

        ANALYSE\SMOOTH [Arg...]

    SMOOTH copies R into T, then degrades the frequency/velocity  resolution
    of R. The arguments are used to specify the method :
      - HANNING      HANNING smoothing is used (default), in which  the  new
        spectrum has twice less channels and twice less resolution.
      - AUTO         uses a cross-validation smoothing with automatic choice
        of  smoothing parameter.  To be used with caution. Noise in adjacent
        channels must be independant, otherwise the algorithm flatly refuses
        to  do  any  smoothing  at  all  (but needs a long computing time to
        realise that...).
      - GAUSS Width  convolves (by multiplication in the Fourier plane) by a
        gaussian of specified width in current units.
      - BOX Ncan     averages Ncan adjacent channels to produce  a  spectrum
        with Ncan less resolution and channels.
      - NOISE Flux Nc  for  each  channel,  sums  at  most  Nc  neighbouring
        channels  until  a  total  flux  Flux  is  reached  in the sum. Then
        attributes the average value (sum  divided  by  number  of  channels
        added)  to  the  channel.  This  smoothing  is non-uniform, strictly
        positive, and has an obvious tendency to produce wings...