matplotlib example tkinter plot ui (snippet)

Python matplotlib example 'tkinter plot ui'

Functions in program:

def _quit():
def on_key_event(event):
def destroy(e):

Modules used in program:

import tkinter as Tk
import sys
import matplotlib

python tkinter plot ui

Python matplotlib example: tkinter plot ui

import matplotlib

from numpy import arange, sin, pi
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
from matplotlib.backend_bases import key_press_handler
# import matplotlib.animation as animation


import sys
import tkinter as Tk

matplotlib.use('TkAgg')


def destroy(e):
    sys.exit()


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


f = Figure(figsize=(5, 4), dpi=100)
a = f.add_subplot(111)
# t = arange(0.0, 3.0, 0.01)
t = arange(0.0, 7.0, 0.01)
# print(t)
s = sin(2*pi*t)

a.plot(t, s)
a.set_title('Tk embedding')
a.set_xlabel('X axis label')
a.set_ylabel('Y label')
# anim = animation.FuncAnimation(f, 5, interval=1000)

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

canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)

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


def on_key_event(event):
    print('you pressed %s' % event.key)
    # key_press_handler(event, canvas, toolbar)
    key_press_handler(event, canvas)


def _quit():
    root.quit()     # stops mainloop
    root.destroy()  # this is necessary on Windows to prevent
    # Fatal Python Error: PyEval_RestoreThread: NULL tstate


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

canvas.mpl_connect('key_press_event', on_key_event)


Tk.mainloop()

Python links

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