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UV_FILTER

        [CLEAN\]UV_FILTER [/RESET] [/ZERO] [/CHANNELS Channel_List]
      [/FREQUENCY List Of Frequencies] [/RANGE Min Max [TYPE]]
      [/VELOCITY List of Velocities] [/WIDTH Width [TYPE]]
      [/FILE FileIn [FileOut]]

    "Filter"  line  emission,  by  flagging  the corresponding channels. The
    channels can be specified either by the /FREQUENCY or /VELOCITY  options
    in  combination with the /WIDTH option, or by a channel list with /CHAN-
    NELS or a range (of channels, frequencies or velocities) with /RANGE.

    By default, channels to be filtered are flagged (weights becoming  nega-
    tive).  Option /ZERO can be used to erase them: weights and visibilities
    are set to zero, see HELP UV_FILTER /ZERO. On the contrary, option  /RE-
    SET can be used to unflag them (and is thus conflicting with option /ZE-
    RO).

    The command works on the current UV data, unless  the  option  /FILE  is
    specified.

    With  no  options (except possibly /FILE and /ZERO), the command behaves
    as UV_FILTER /CHANNELS PreviewChannels. See UV_PREVIEW for details.


Subsections

Gildas manager 2023-06-01