NEW Matplotlib Demos for Web port

PySimpleGUIWeb/Demo Programs/Web_Matplotlib_Simple.py

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+import PySimpleGUIWeb as sg
+import numpy as np
+from matplotlib.backends.backend_tkagg import FigureCanvasAgg
+import matplotlib.figure
+import io
+
+
+def create_figure():
+    # ------------------------------- START OF YOUR MATPLOTLIB CODE -------------------------------
+    fig = matplotlib.figure.Figure(figsize=(5, 4), dpi=100)
+    t = np.arange(0, 3, .01)
+    fig.add_subplot(111).plot(t, 2 * np.sin(2 * np.pi * t))
+
+    return fig
+
+
+def draw_figure(fig, element):
+    canv = FigureCanvasAgg(fig)
+    buf = io.BytesIO()
+    canv.print_figure(buf, format='png')
+
+    if buf is None:
+        return None
+    buf.seek(0)
+    data = buf.read()
+    element.update(data=data)
+
+def main():
+
+    layout = [
+                [sg.T('Matplotlib Example', font='Any 20')],
+                [sg.Image(key='-IMAGE-')],
+                [sg.B('Draw'), sg.B('Exit')],
+            ]
+
+    window = sg.Window('Title', layout)
+
+    while True:
+        event, values = window.read()
+        if event == 'Exit' or event == sg.WIN_CLOSED:
+            break
+        if event == 'Draw':
+            draw_figure(create_figure(), window['-IMAGE-'])
+    window.close()
+
+
+if __name__ == "__main__":
+    main()