def __init__(self, *args, **kwargs):
PlotCurve.__init__(self, *args, **kwargs)
self._dependent = []
def __init__(self, *args, **kwargs):
# fill values for masked x, y
self.fillx = kwargs.pop('fillx', 0)
self.filly = kwargs.pop('filly', 0)
PlotCurve.__init__(self, *args, **kwargs)
