def SetAxis(self, position, axis):
    self._axes.setdefault(position, [None])[0] = axis
    return axis
Return delta between last position and current position, in the
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/_internal/graphy/common.py/BaseChart.SetAxis--crossover with--dataset/ETHPy150Open kivy/kivy/kivy/input/motionevent.py/MotionEvent.dpos