From 087a0e218a92596725ea655c9a0de5d456941042 Mon Sep 17 00:00:00 2001
From: MikeTheWatchGuy <mike_barnett@hotmail.com>
Date: Thu, 4 Oct 2018 16:02:45 -0400
Subject: [PATCH] NEW Demo Program for PyPlot diagrapms. Displays bar chart

---
 Demo_Pyplot_Bar_Chart.py | 88 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 Demo_Pyplot_Bar_Chart.py

diff --git a/Demo_Pyplot_Bar_Chart.py b/Demo_Pyplot_Bar_Chart.py
new file mode 100644
index 00000000..f927129b
--- /dev/null
+++ b/Demo_Pyplot_Bar_Chart.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+import sys
+
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+
+import matplotlib
+
+matplotlib.use('TkAgg')
+from matplotlib.backends.backend_tkagg import FigureCanvasAgg
+import matplotlib.backends.tkagg as tkagg
+import tkinter as Tk
+
+"""
+Demonstrates one way of embedding Matplotlib figures into a PySimpleGUI window.
+
+Paste your Pyplot code into the section marked below.
+
+Do all of your plotting as you normally would, but do NOT call plt.show(). 
+Stop just short of calling plt.show() and let the GUI do the rest.
+
+The remainder of the program will convert your plot and display it in the GUI.
+If you want to change the GUI, make changes to the GUI portion marked below.
+
+"""
+
+# ------------------------------- PASTE YOUR MATPLOTLIB CODE HERE -------------------------------
+
+import numpy as np
+import matplotlib.pyplot as plt
+
+N = 5
+values_to_plot = (20, 35, 30, 35, 27)
+ind = np.arange(N)  # the x locations for the groups
+width = 0.4  # the width of the bars: can also be len(x) sequence
+
+p1 = plt.bar(ind, values_to_plot, width)
+
+plt.ylabel('Y-Axis Values')
+plt.title('Plot Title')
+plt.xticks(ind, ('Item 1', 'Item 2', 'Item 3', 'Item 4', 'Item 5'))
+plt.yticks(np.arange(0, 81, 10))
+plt.legend((p1[0],), ('Data Group 1',))
+
+
+# ------------------------------- END OF YOUR MATPLOTLIB CODE -------------------------------
+
+# ------------------------------- Beginning of Matplotlib helper code -----------------------
+
+
+def draw_figure(canvas, figure, loc=(0, 0)):
+    """ Draw a matplotlib figure onto a Tk canvas
+
+    loc: location of top-left corner of figure on canvas in pixels.
+
+    Inspired by matplotlib source: lib/matplotlib/backends/backend_tkagg.py
+    """
+    figure_canvas_agg = FigureCanvasAgg(figure)
+    figure_canvas_agg.draw()
+    figure_x, figure_y, figure_w, figure_h = figure.bbox.bounds
+    figure_w, figure_h = int(figure_w), int(figure_h)
+    photo = Tk.PhotoImage(master=canvas, width=figure_w, height=figure_h)
+    canvas.create_image(loc[0] + figure_w / 2, loc[1] + figure_h / 2, image=photo)
+    tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2)
+    return photo
+
+
+# ------------------------------- Beginning of GUI CODE -------------------------------
+
+fig = plt.gcf()  # if using Pyplot then get the figure from the plot
+figure_x, figure_y, figure_w, figure_h = fig.bbox.bounds
+
+# define the window layout
+layout = [[sg.Text('Plot test', font='Any 18')],
+          [sg.Canvas(size=(figure_w, figure_h), key='canvas')],
+          [sg.OK(pad=((figure_w / 2, 0), 3), size=(4, 2))]]
+
+# create the form and show it without the plot
+window = sg.Window('Demo Application - Embedding Matplotlib In PySimpleGUI', force_toplevel=True).Layout(
+    layout).Finalize()
+
+# add the plot to the window
+fig_photo = draw_figure(window.FindElement('canvas').TKCanvas, fig)
+
+# show it all again and get buttons
+button, values = window.Read()