[Matplotlib-users] Use pyplot functions and embedded Qt widget

[Александров П. <pet...@ma...>]

Hello.
Can I use pyplot functions (such as pyplot.plot, pyplot.pcolormesh) to 
plot in embedded Qt plot?
I have created the following class

class CDeltaHPlot(FigureCanvasQTAgg):
     def __init__(self, parent = None):
         self.figure = Figure()
         self.axes = self.figure.add_subplot(111)
         FigureCanvasQTAgg.__init__(self, self.figure)
         self.setParent(parent)
         FigureCanvasQTAgg.setSizePolicy(self, QSizePolicy.Expanding,
                 QSizePolicy.Expanding)
         FigureCanvasQTAgg.updateGeometry(self)
         self.plot()

     def plot(self):
         pyplot.sca(self.axes)

But it throws the following exception:
  File 
"/opt/develop/lib/python3.4/site-packages/matplotlib-1.4.0-py3.4-linux-x8
6_64.egg/matplotlib/pyplot.py", line 806, in sca
     raise ValueError("Axes instance argument was not found in a figure.")
ValueError: Axes instance argument was not found in a figure.

Kind regards, Petr.