sorry that the real piece of code
self.MplWidget.canvas.axes.set_xlim(left=max(0, self.i-40), right= self.i+60) self.MplWidget.canvas.axes.plot(x, y,'.k-') self.MplWidget.canvas.axes.set_title('pull') self.MplWidget.canvas.draw() -- https://mail.python.org/mailman/listinfo/python-list