holoviews_curve_scatter_overlay_with_bokeh_backend.py

1import numpy as np
2import holoviews as hv
3from holoviews import opts
4
5# Initialize the Bokeh backend
6hv.extension('bokeh')
7
8# Create some sample data
9frequencies = [0.5, 0.75, 1.0, 1.25]
10def sine_curve(phase, freq):
11    xvals = np.arange(100)
12    yvals = np.sin(phase + (xvals / 10.0) * freq)
13    return hv.Curve((xvals, yvals), 'Time', 'Amplitude')
14
15# Create a Curve element and a Scatter element
16curve = sine_curve(0, 1.5)
17scatter = hv.Scatter(curve).opts(color='red', size=4)
18
19# Overlay them using the * operator and apply options
20layout = (curve * scatter).opts(
21    opts.Curve(width=600, height=400, line_width=2),
22    opts.Scatter(tools=['hover'])
23)
24
25# Display the result
26layout