matplotlibで一つのfigureウィンドウの内容を逐次的に更新してアニメーションする

matplotlib_dynamic_update.py

# -*- coding: utf-8 -*-
"""
Created on Wed Mar 22 16:44:14 2017

@author: sakurai
"""

import numpy as np
import matplotlib.pyplot as plt


plt.ion()

t_begin = 0
t_end = 10 * np.pi
t_num = 200

x = []
y = []
(line,) = plt.plot(x, y)

for t in np.linspace(t_begin, t_end, t_num):
    x_t = t * np.cos(t)
    y_t = t * np.sin(t)

    x.append(x_t)
    y.append(y_t)

    line.set_xdata(x)
    line.set_ydata(y)

    max_abs = np.absolute(np.concatenate((x, y))).max()
    plt.xlim([-max_abs, max_abs])
    plt.ylim([-max_abs, max_abs])

    plt.draw()
    plt.pause(0.01)

plt.ioff()
plt.show()