DATE     94/01/10
    Opérateur BARYCENTRE
    --------------------

    POIN1 = BARY GEO1 ;

    Description :                                                                                    Objet
    ____________

    The BARYCENTRE operator creates the point which corresponds
    to the arithmetic mean of the set of nodes contained in a
    geometry.


    Contents :
    __________

    GEO1  : geometry (MAILLAGE type)

    POIN1 : barycentre of the GEO1 geometry (POINT type)

    Note :
    ________

    this barycentre does not in general coincide with the center
    of gravity of the geometry.