READ /RANGE
Keywords: imager

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READ /RANGE

            [CLEAN\]READ Buffer File /RANGE Min Max Type

        Load only the channels between the First and Last defined by Min Max and
        Type.  Type can be CHANNEL, VELOCITY or FREQUENCY. If the Data cube  has
        no Frequency/Velocity axis, only CHANNEL is allowed.

        For  type CHANNEL, Min and Max indicate offsets from Channel 1 and Chan-
        nel Nchan (the number of channels in the data set). Thus Max can be neg-
        ative:  it then indicates Last = Nchan-Max. Also Min=0 and Max=0 implies
        loading all the channels.

        The /RANGE option is not allowed for FITS files.

        For UV tables with more than 1 Stokes parameter, which are **NOT** fully
        supported by IMAGER, the meaning of "channel" is ambiguous.