matplotlib example embed plt in tk (snippet)

Python matplotlib example 'embed plt in tk'

Functions in program:

• def _quit():
• def on_key_event(event):

Modules used in program:

• import tkinter as Tk
• import numpy as np
• import matplotlib

python embed plt in tk

Python matplotlib example: embed plt in tk

# -*- coding: utf-8 -*-
#!/usr/bin/env python

import matplotlib
matplotlib.use('TkAgg')

import numpy as np
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
# implement the default mpl key bindings
from matplotlib.backend_bases import key_press_handler
from matplotlib.figure import Figure

import tkinter as Tk

root = Tk.Tk()
root.wm_title("Embedding in TK")


f = Figure(figsize=(5, 4), dpi=100)
a = f.add_subplot(111)
t = np.arange(0.0, 3.0, 0.01)
s = np.sin(2*np.pi*t)

a.plot(t, s)


# tk.DrawingArea
canvas = FigureCanvasTkAgg(f, master=root)
canvas.show()
canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)

toolbar = NavigationToolbar2TkAgg(canvas, root)
toolbar.update()
canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)

def on_key_event(event):
    key_press_handler(event, canvas, toolbar)

canvas.mpl_connect('key_press_event', on_key_event)

def _quit():
    # stops mainloop
    root.quit()     
    root.destroy()

button = Tk.Button(master=root, text='Quit', command=_quit)
button.pack(side=Tk.BOTTOM)

root.protocol("WM_DELETE_WINDOW", _quit)
root.mainloop()

Python links

• Learn Python: https://pythonbasics.org/
• Python Tutorial: https://pythonprogramminglanguage.com