matplotlib & pandas

Python/matplotlab/gallery/animation/simple_anim.md

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+# 动画线图
+
+![动画线图](https://matplotlib.org/_images/sphx_glr_simple_anim_001.png)
+
+```python
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.animation as animation
+
+fig, ax = plt.subplots()
+
+x = np.arange(0, 2*np.pi, 0.01)
+line, = ax.plot(x, np.sin(x))
+
+
+def init():  # only required for blitting to give a clean slate.
+    line.set_ydata([np.nan] * len(x))
+    return line,
+
+
+def animate(i):
+    line.set_ydata(np.sin(x + i / 100))  # update the data.
+    return line,
+
+
+ani = animation.FuncAnimation(
+    fig, animate, init_func=init, interval=2, blit=True, save_count=50)
+
+# To save the animation, use e.g.
+#
+# ani.save("movie.mp4")
+#
+# or
+#
+# from matplotlib.animation import FFMpegWriter
+# writer = FFMpegWriter(fps=15, metadata=dict(artist='Me'), bitrate=1800)
+# ani.save("movie.mp4", writer=writer)
+
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: simple_anim.py](https://matplotlib.org/_downloads/simple_anim.py)
+- [下载Jupyter notebook: simple_anim.ipynb](https://matplotlib.org/_downloads/simple_anim.ipynb)