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MASK

        MASK

    This  task masks either the inside or the outside of  a  polygon  in all
    planes  of a data cube.  It is similar to  the  MASK  command  in  GreG,
    GRAPHIC or OVERLAY, but it does affect  the  output  image  and  not  an
    internal  copy  of  it.   The  polygon must have been created previously
    using the WRITE POLYGON command in GreG, for example.


Gildas manager 2020-09-28