1 files changed, 74 insertions, 0 deletions
diff --git a/examples/external/matplotlib/widget_gaussian/widget_gaussian.py b/examples/external/matplotlib/widget_gaussian/widget_gaussian.py
new file mode 100644
index 000000000..2423e496a
--- /dev/null
+++ b/examples/external/matplotlib/widget_gaussian/widget_gaussian.py
@@ -0,0 +1,74 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+import sys
+
+import numpy as np
+from scipy.stats import norm
+from matplotlib.figure import Figure
+from matplotlib.backends.backend_qtagg import FigureCanvas
+from matplotlib.backends.backend_qtagg import NavigationToolbar2QT
+from PySide6.QtCore import Slot
+from PySide6.QtWidgets import (
+    QApplication,
+    QWidget,
+    QDoubleSpinBox,
+    QVBoxLayout,
+    QHBoxLayout,
+)
+
+
+"""This example implements the interaction between Qt Widgets and a 2D
+matplotlib plot showing a gaussian curve with scipy"""
+
+
+class PlotWidget(QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        #  create widgets
+        self.view = FigureCanvas(Figure(figsize=(5, 3)))
+        self.axes = self.view.figure.subplots()
+        self.toolbar = NavigationToolbar2QT(self.view, self)
+        self.mu_input = QDoubleSpinBox()
+        self.std_input = QDoubleSpinBox()
+        self.mu_input.setPrefix("μ: ")
+        self.std_input.setPrefix("σ: ")
+        self.std_input.setValue(10)
+
+        #  Create layout
+        input_layout = QHBoxLayout()
+        input_layout.addWidget(self.mu_input)
+        input_layout.addWidget(self.std_input)
+        vlayout = QVBoxLayout()
+        vlayout.addWidget(self.toolbar)
+        vlayout.addWidget(self.view)
+        vlayout.addLayout(input_layout)
+        self.setLayout(vlayout)
+
+        # connect inputs with on_change method
+        self.mu_input.valueChanged.connect(self.on_change)
+        self.std_input.valueChanged.connect(self.on_change)
+
+        self.on_change()
+
+    @Slot()
+    def on_change(self):
+        """ Update the plot with the current input values """
+        mu = self.mu_input.value()
+        std = self.std_input.value()
+
+        x = np.linspace(-100, 100)
+        y = norm.pdf(x, mu, std)
+
+        self.axes.clear()
+        self.axes.plot(x, y)
+        self.view.draw()
+
+
+if __name__ == "__main__":
+
+    app = QApplication(sys.argv)
+    w = PlotWidget()
+    w.show()
+    sys.exit(app.exec())