In [46]:

    

from bokeh.io import vform
from bokeh.models import CustomJS, ColumnDataSource, Slider
from bokeh.plotting import Figure, output_file, show
import numpy as np


    

In [47]:

    

output_file("callback.html")

x = np.arange(0,10000,1)
y = 0.5 * x


    

In [48]:

    

source = ColumnDataSource(data=dict(x=x, y=y))

plot = Figure(plot_width=400, plot_height=400, webgl=True)
plot.circle('x', 'y', source=source, line_width=3, line_alpha=0.6)


    

    
Out[48]:





<bokeh.models.renderers.GlyphRenderer at 0x7f07fb24d450>

In [49]:

    

callback = CustomJS(args=dict(source=source), code="""
        var data = source.get('data');
        var f = cb_obj.get('value')
        x = data['x']
        y = data['y']
        for (i = 0; i < x.length; i++) {
            y[i] = Math.pow(x[i], f)
        }
        source.trigger('change');
    """)


    

In [50]:

    

slider = Slider(start=0.1, end=4, value=1, step=.1, title="power", callback=callback)

layout = vform(slider, plot)


    

In [51]:

    

show(layout)


    

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