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READ /PLANES

        [CLEAN\]READ Buffer File /PLANES Min Max

    Read  only the last axis "planes" between the  First and Last implied by
    Min and Max. For an LMV-ordered cube, this would be equivalent to
          READ Buffer File /RANGE Min Max CHANNEL
    However, for transposed data cubes, VML or LVM-ordered for example, this
    is  not  true  at  all when a Frequency/Velocity axis is present: /RANGE
    would specify a subset of this(yet) axis, while /PLANES always  indicate
    a subset of the 3rd axis of the cube.

    Min  and  Max  indicate  offsets  from  Plane 1 and the number of planes
    Nplane.  Thus Max can be negative: it then indicates Last =  Nplane-Max.
    Also Min=0 and Max=0 implies loading all the channels.


Gildas manager 2023-06-01