Question

我对Python中的动画有一些疑问。我不明白，为什么动画只绘制初始化帧。根本没有调用函数redraw，这就是问题所在。对我来说，函数redraw和init之间没有区别，所以这很奇怪。参数k也许是帧号

我试图在文档matplotlib.animation.FuncAnimation中找到某些内容，但未成功

那么有人可以帮忙吗？

import random
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

# function of initialization

    def init(x, y, a, b, bottom, top, ax):
        ax.plot(x, y, color = 'blue', linewidth = 1)
        ax.plot([a, a], [bottom, top], color = 'red', linewidth = 1)
        ax.plot([a, b], [top, top], color = 'red', linewidth = 1)
        ax.plot([b, b], [top, bottom], color = 'red', linewidth = 1)
        ax.plot([b, a], [bottom, bottom], color = 'red', linewidth = 1)

# this function draw dot with random coordinates

    def redraw(k, a, b, bottom, top, f, ax):
        x_dot = random.uniform(a, b)
        y_dot = random.uniform(bottom, top)
        if y_dot <= f(x_dot) and y_dot >= 0:
            clr = 'blue'
        else:
            clr = 'red'
        ax.plot(x_dot, y_dot, color = clr, marker = 'o', markersize = 10)

# main function with animation

    def method_monte_carlo(f, N, a, b):
        delta_x = 0.01
        x = np.arange(a, b+delta_x, delta_x)
        y = f(x)
        bottom = 0
        top = np.max(y)
        fig = plt.figure(figsize = (15, 15))
        ax = fig.add_subplot(1, 1, 1)  
        animation.FuncAnimation(fig, redraw, frames = N, interval = 10,
        init_func = init(x, y, a, b, bottom, top, ax), repeat = False, 
        fargs = (a, b, bottom, top, f, ax))

    def g(x):
        return np.cos(x)**2

    method_monte_carlo(g, 1000, 0, np.pi)

P.S。我使用Spyder v.3.3.2

FuncAnimation仅绘制初始化帧

0 个答案: