#!/usr/bin/env python3

#

# http://matplotlib.org/examples/user_interfaces/embedding_in_tk.html

#

# update: 2019.08.03

#

# NavigationToolbar2TkAgg is deprecate since 2.2 and doesn't work in 3.1.1

# so now it uses NavigationToolbar2Tk

#

# FigureCanvasTk doesn't display plot but it still shows coordinates in navigation bar

# so it still uses FigureCanvasTkAgg

#

import matplotlib

from matplotlib.backends.backend_tkagg import (

FigureCanvasTkAgg,

#FigureCanvasTk, # doesn't display plot but it still shows coordinates in navigation bar

#NavigationToolbar2TkAgg, deprcated in 2.2 and doesn't work in 3.1.1

NavigationToolbar2Tk

)

from matplotlib.pyplot import Figure

import tkinter as tk

# --- random data ---

import random

import math

y1 = [random.randint(-100, 100) for x in range(60)]

y2 = [math.sin(math.radians(x*6)) for x in range(60)]

# --- GUI ---

root = tk.Tk()

# top frame for canvas and toolbar - which need `pack()` layout manager

top_frame = tk.Frame(root)

top_frame.pack()

# bottom frame for other widgets - which may use other layout manager

bottom_frame = tk.Frame(root)

bottom_frame.pack()

# --- canvas and toolbar in top ---

# create figure

fig = matplotlib.pyplot.Figure()

# create matplotlib canvas using `fig` and assign to widget `top_frame`

canvas = FigureCanvasTkAgg(fig, top_frame)

# get canvas as tkinter widget and put in widget `top`

canvas.get_tk_widget().pack()

# create toolbar in canvas

toolbar = NavigationToolbar2Tk(canvas, top_frame)

#toolbar.update() # I'm not sure if it is needed. Code works without it too

# --- first plot ---

# create first place for plot

ax1 = fig.add_subplot(211)

# draw on this plot

ax1.plot(y1)

# --- second plot ---

# create second place for plot

ax2 = fig.add_subplot(212)

# draw on this plot

ax2.plot(y2)

# --- other widgets in bottom ---

b = tk.Button(bottom_frame, text='Exit', command=root.destroy)

b.pack()

# --- start ----

root.mainloop()