Matplotlib animation 在 Colab 中無法正確顯示

Question

我知道這個問題有以前的答案，但由於某種原因，我似乎無法讓 animation 顯示。 相反，animation 的所有框架都覆蓋在空白 animation 下方出現的圖中

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

我試圖復制在這里找到的一個有點相似的項目

我相當肯定這個錯誤很小，但我無法弄清楚問題到底出在哪里。 任何幫助表示贊賞

Answer 1

我認為原因是在 animation function 中使用了 plt.bar。 我認為將其更改為 axes.bar() 並關閉初始圖形將完成 animation。

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

我也有同樣的問題。 感謝 Kalibril，我可以在 colab 上運行 animation。

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)