push_notebook 未更新散景变化 data_source

Question

我无法持续更新显示的图形。有人可以帮帮我吗？

#!/usr/bin/env python
# coding: utf-8

# In[1]:


import numpy as np

import bokeh
from bokeh.io import push_notebook, show, output_notebook
from bokeh import layouts
from bokeh.plotting import figure

output_notebook()


# In[2]:


def to_data_source(y):
    y = np.array(y)
    x = np.arange(y.size)
    return bokeh.models.ColumnDataSource({
        'x': x,
        'y': y
    })


# In[3]:


# this will plot an empty figure
vis = figure()
handle = show(vis, notebook_handle=True)


# In[4]:


# this will plot on the empty figure
line = vis.line()
line.data_source = to_data_source(np.random.randn(30))
push_notebook(handle=handle)


# In[5]:


# this will not update the figure
line.data_source.data['y'] += np.arange(30)
push_notebook(handle=handle)


# In[6]:


# this will not update the figure
line.update(data_source=to_data_source(line.data_source.data['y'] + np.arange(30)))
push_notebook(handle=handle)


# In[7]:


# this will plot the correct figure that should've been updated to the previous `show`
show(vis)

我每次都尝试删除旧字形并添加一个新字形，它确实有效。但是，我不明白为什么这种随处可见的简单用法在这里不起作用。

这里还有笔记本的要点：https://gist.github.com/uduse/f2b17bc67de8fd0ee32f34a87849c8b6

Answer 1

从 vis 创建 line 后尝试创建图的 handle。

import numpy as np
import bokeh
from bokeh.io import push_notebook, show, output_notebook
from bokeh import layouts
from bokeh.plotting import figure
output_notebook()

line = vis.line()
line.data_source = to_data_source(np.random.randn(30))

## Handle defined here after adding stuff to the figure
handle = show(vis, notebook_handle=True)

push_notebook(handle=handle)


# this will NOW UPDATE the figure
line.data_source.data['y'] += np.arange(30)
push_notebook(handle=handle)

实际上，我不确定它为什么会这样，但它应该那样工作。
希望对您有所帮助。

Answer 2

这实际上是一个已知错误。参见 https://github.com/bokeh/bokeh/issues/8244

push_notebook 未更新散景变化 data_source

Bokeh change data_source aren't updated by push_notebook

python

bokeh