简单的Matplotlib动画无法正常工作 [英] Simple Matplotlib animate not working
问题描述
我正在尝试在下面运行此代码,但无法正常工作.我遵循了matplotlib的文档,并想知道下面的简单代码有什么问题.我正在尝试使用anaconda发行版将此动画设置为jupyter笔记本.我的python版本是2.7.10.
I am trying to run this code below but it is not working properly. I've followed the documentation from matplotlib and wonder what is wrong with this simple code below. I am tryting to animate this into jupyter notebook with anaconda distro. My python version is 2.7.10.
import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation
fig = plt.figure()
def init():
m = np.zeros(4800)
m[0] = 1.6
return m
def animate(i):
for a in range(1,4800):
m[a] = 1.6
m[a-1] = 0
return m
anim = animation.FuncAnimation(fig, animate, init_func=init,
frames=200, interval=20, blit=True)
plt.show()
推荐答案
您需要创建实际图.仅更新NumPy数组是不够的.这是一个示例,它可能会实现您的预期.由于必须在多个位置访问相同的对象,因此类似乎更适合,因为它允许通过 self
:
You need to create an actual plot. Just updating a NumPy array is not enough.
Here is an example that likely does what you intend. Since it is necessary to access the same objects at multiple places, a class seems better suited as it allows to access instance attributes via self
:
import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation
class MyAni(object):
def __init__(self, size=4800, peak=1.6):
self.size = size
self.peak = peak
self.fig = plt.figure()
self.x = np.arange(self.size)
self.y = np.zeros(self.size)
self.y[0] = self.peak
self.line, = self.fig.add_subplot(111).plot(self.x, self.y)
def animate(self, i):
self.y[i - 1] = 0
self.y[i] = self.peak
self.line.set_data(self.x, self.y)
return self.line,
def start(self):
self.anim = animation.FuncAnimation(self.fig, self.animate,
frames=self.size, interval=20, blit=False)
if __name__ == '__main__':
ani = MyAni()
ani.start()
plt.show()
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