Jupyter Notebook中的交互式散景图未更新

Question

I have written the following little script with which I simply want to plot an interactive sine curve where I can change the amplitude of the curve and the title of the figure. Though, as output I get the figure together with the slider and text field but altering the values does not change the curve or title.

import numpy as np
from bokeh.io import push_notebook
import pandas as pd
from ipywidgets import interact
from bokeh.layouts import widgetbox
from bokeh.io import push_notebook

x = np.linspace(0,2*np.pi,2000)
y = np.sin(x)

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

p = figure(plot_height=300,plot_width=600,title="my sine wave")
p.line('x','y',source=df_data)


# Set up widges
amplitude = Slider(title="amlitude", value=0.0, start=0.01, end=0.99, step=0.01)
text = TextInput(title="title", value='my sine wave')

# Update
def update_data(attrname, old, new):

    # Get the current slider values
    a = amplitude.value
    b = text.value

    y = amplitude*np.sin(x)


    output_notebook()
    show(row(p,widgetbox([amplitude,text])))




text.on_change('value', update_data)
amplitude.on_change('value',update_data)



# Set to output the plot in the notebook

output_notebook()
show(row(p,widgetbox([amplitude,text])))

So as you can see, everything works fine instead of the updating of the plot.

Answer 1

everything works fine instead of the updating of the plot.

Within update_data you have to show() again as in your bottom lines or it won't refresh.