HoloViews 超出了 IOPub 消息速率

Question

我正在尝试使用 DynamicMap 上的 periodic 函数为路径设置动画，但我的 Jupyter Notebook 开始抱怨并显示以下错误消息：

IOPub message rate exceeded.
The notebook server will temporarily stop sending output
to the client in order to avoid crashing it.
To change this limit, set the config variable
`--NotebookApp.iopub_msg_rate_limit`.

Current values:
NotebookApp.iopub_msg_rate_limit=1000.0 (msgs/sec)
NotebookApp.rate_limit_window=3.0 (secs)

这是我的代码：

def paths3():
    N = 50
    x = np.linspace(0,10,N)
    y = (2 * x + 3)

    f = 0.0
    g = 0.5

    while True:
        i = np.clip(int((N-1)*f),0,N-1)
        j = np.clip(int((N-1)*(f-g)),0,N-1)
        if j < 0:
            j = 0

        alpha_max = 1 if f <= 1 else ((1.0-(f-g))*N) / N

        alpha = np.concatenate((np.zeros(j),np.linspace(0.1,alpha_max,(i-j+1)),np.zeros(N-(i+1))))

        data = pd.DataFrame({'x':x,'y':y,'alpha':alpha})

        yield hv.Path(data, vdims='alpha').opts(alpha='alpha')

        if f > 2:
            f = 0
        else:
            f += 0.01

paths3 = paths3()
dmap = hv.DynamicMap(paths3, streams=[Stream.define('Next')()])
dmap

dmap.periodic(0.1, 100)

我看到人们遇到过类似的问题，但那是在 2017 年左右使用旧版本的 Jupyter Notebook 的时候。

这是我的 Jupyter Notebook 中的 'About' 部分：

Server Information:

You are using Jupyter notebook.

The version of the notebook server is: 6.0.1
The server is running on this version of Python:

Python 3.6.9 |Anaconda, Inc.| (default, Jul 30 2019, 14:00:49) [MSC v.1915 64 bit (AMD64)]

Current Kernel Information:

Python 3.6.9 |Anaconda, Inc.| (default, Jul 30 2019, 14:00:49) [MSC v.1915 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.

IPython 5.8.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

Answer 1

将消息速率设置为更高的 10,000 或 100,000 是否有帮助（启动 jupyter notebook 时），如下所示：

jupyter notebook --NotebookApp.iopub_msg_rate_limit=10000

这个 SO 问题指的是一个类似的问题：

HoloViews 超出了 IOPub 消息速率

IOPub message rate exceeded with HoloViews

python

jupyter-notebook

holoviews

pyviz