python bokeh slider
import numpy as np
from bokeh.layouts import column, row
from bokeh.models import CustomJS, Slider
from bokeh.plotting import ColumnDataSource, figure, output_file, show
x = np.linspace(0, 10, 500)
y = np.sin(x)
source = ColumnDataSource(data=dict(x=x, y=y))
plot = figure(y_range=(-10, 10), plot_width=400, plot_height=400)
plot.line('x', 'y', source=source, line_width=3, line_alpha=0.6)
amp_slider = Slider(start=0.1, end=10, value=1, step=.1, title="Amplitude")
freq_slider = Slider(start=0.1, end=10, value=1, step=.1, title="Frequency")
phase_slider = Slider(start=0, end=6.4, value=0, step=.1, title="Phase")
offset_slider = Slider(start=-5, end=5, value=0, step=.1, title="Offset")
callback = CustomJS(args=dict(source=source, amp=amp_slider, freq=freq_slider, phase=phase_slider, offset=offset_slider),
code="""
const data = source.data;
const A = amp.value;
const k = freq.value;
const phi = phase.value;
const B = offset.value;
const x = data['x']
const y = data['y']
for (var i = 0; i < x.length; i++) {
y[i] = B + A*Math.sin(k*x[i]+phi);
}
source.change.emit();
""")
amp_slider.js_on_change('value', callback)
freq_slider.js_on_change('value', callback)
phase_slider.js_on_change('value', callback)
offset_slider.js_on_change('value', callback)
layout = row(
plot,
column(amp_slider, freq_slider, phase_slider, offset_slider),
)
output_file("slider.html", title="slider.py example")
show(layout)