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UV_SHIFT 

        UV_SHIFT

    This task changes the phase tracking center of a UV table, by applying a
    phase shift on the data. The coordinate system can also be rotated using
    the  variable ANGLE$. Rotation is easier to apply in UV tables since ro-
    tation and Fourier transform commute: only the U and V coordinates  have
    to be rotated.

Gildas manager 2014-07-01