matplotlib动画在Colab中未正确显示

Question

我知道这个问题以前有答案，但由于某种原因，我似乎无法显示动画。取而代之的是，动画的所有框架都覆盖在空白动画下方的图中，

from matplotlib import animation
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
import random
from matplotlib import rc
rc('animation', html='jshtml')

# This is setup code
class_capacity = [100, 100, 100]
classes = ["CS1301", "CS1331", "CS1332"]
current_enrolled_students = [10, 0, 0]
fig, axes = plt.subplots(figsize=(8,6))
#axes =fig.add_subplot()
axes.set_ylim(0, 100)

cmap = plt.get_cmap("jet")

def animate(i):
    axes.clear()
    axes.set_ylim(0, 100)
    for i in range(len(current_enrolled_students)):
        current_enrolled_students[i] = random.randint(0, class_capacity[i])
    barlist = plt.bar(classes, current_enrolled_students)
    for i in range(len(barlist)):
        barlist[i].set_color(cmap(current_enrolled_students[i] / class_capacity[i]))

ani = FuncAnimation(fig, animate, interval=400, blit=False, frames=9, repeat=False)
#plt.close()
#plt.show()
ani

我试图复制一个有点相似的项目在这里

我可以肯定的是，错误是次要的，但我无法弄清楚问题到底在哪里。 任何帮助都将受到赞赏

Answer 1

我认为原因是在动画函数中使用plt.bar。我认为将其更改为axes.bar（）和关闭初始图将完成动画。

from matplotlib import animation
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
import random
from matplotlib import rc
rc('animation', html='jshtml')

# This is setup code
class_capacity = [100, 100, 100]
classes = ["CS1301", "CS1331", "CS1332"]
current_enrolled_students = [10, 0, 0]
fig, axes = plt.subplots(figsize=(8,6))
#axes =fig.add_subplot()
axes.set_ylim(0, 100)

cmap = plt.get_cmap("jet")

def animate(i):
    axes.clear()
    #axes.set_ylim(0, 100)
    for i in range(len(current_enrolled_students)):
        current_enrolled_students[i] = random.randint(0, class_capacity[i])
    barlist = axes.bar(classes, current_enrolled_students)
    for i in range(len(barlist)):
        barlist[i].set_color(cmap(current_enrolled_students[i] / class_capacity[i]))

ani = FuncAnimation(fig, animate, interval=400, blit=False, frames=9, repeat=False)
plt.close()
#plt.show()
ani

Answer 2

我有同样的问题。感谢Kalibril，我可以在Colab上运行动画。

import matplotlib.animation
import matplotlib.pyplot as plt
from itertools import count
import random

plt.rcParams["animation.html"] = "jshtml"
plt.rcParams['figure.dpi'] = 150  

plt.ioff()
fig, ax = plt.subplots()
x_value = []
y_value = []
index = count();
def animate(t):
    x_value.append(next(index))
    y_value.append(random.randint(0,10))
    ax.cla()
    ax.plot(x_value,y_value)
    ax.set_xlim(0,10)

matplotlib.animation.FuncAnimation(fig, animate, frames=10, interval = 500)