def __init__(self, parent=None, width=5, height=4, dpi=100):
self._fig = Figure(figsize=(width, height), dpi=dpi, facecolor='none')
FigureCanvas.__init__(self, self._fig)
# super(MPLCanvas, self).__init__(self._fig)
self._axes = self._fig.add_subplot(111)
self.compute_initial_figure()
self.setParent(parent)
FigureCanvas.setSizePolicy(self, QSizePolicy.Expanding,
QSizePolicy.Expanding)
FigureCanvas.updateGeometry(self)
