MAP_SMOOTH
Keywords: imager

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MAP_SMOOTH

            [CLEAN\]MAP_SMOOTH WhichOne Nc [Result] [/ASYMMETRIC]

        Smooth a  3-D data cubes by Nc channels along the velocity axis.
             Nc   number of channels to be averaged in smoothing.
        WhichOne indicates which data cube must be  compressed.  Allowed  values
        are
             - Built-in buffers DIRTY, CLEAN, SKY, SINGLE or *, which means all
               of the previous existing ones. Smoothing is done in place.
             - Any SIC Image Variable that is not a built-in buffer in IMAGER.
             - A GILDAS data file
        For  the  two  later  cases,  the  Result  argument  indicates where the
        smoothed data cube is stored. Result can be a file name or  an  existing
        SIC variable of adequate dimensions.

        By  default,  the smoothing does not modify the spectral sampling of the
        cubes. While this naturally occurs when the smoothing number Nc is  odd,
        the  Nc  even  case  requires  a  specific  handling.   For Nc even, the
        smoothed channel at channel "i" sums up half of channel i-Nc/2, half  of
        channels  i+Nc/2  and all channels in between.  Thus for Nc=2, this is a
        Hanning smoothing.

        Like for UV_SMOOTH, this behaviour can be modified by  option  /ASYMMET-
        RIC.

Subsections

- MAP_SMOOTH /ASYMMETRIC