Drawing a matplotlib widget in QtDesigner

Question

I created this QDialog in QtDesigner:

I would like to know how I can do something in this Matplotlib widget that I posted there. I mean, if I write code to create a matplotlib shape without Qt Designer, I can write something like:

self.figure_canvas = FigureCanvas(Figure())

self.axes = self.figure_canvas.figure.add_subplot(111)

x = np.arange(0,5,0.5)
y = np.sin(x)

and then do:

ax.plot(x,y) or self.axes.plot(x,y)

How can I access this widget to draw something? I hope you help me.

Answer 1

Based on the screenshot you provided, it seems MatplotlibWidgetto be available both self.matplotlibwidgetfrom your class QMainWindow. This is because of the value specified in the Object column of the Inspector.

, .

self.matplotlibwidget.axes.plot(x, y)