import numpy as np
import holoviews as hv
hv.extension('matplotlib')

%%opts Spikes (alpha=0.4) [spike_length=0.1]
xs = np.random.rand(50)
hv.Spikes(xs)

%%opts Points (color='red')
ys = np.random.rand(50)
hv.Points((xs, ys)) * hv.Spikes(xs)

%%opts Spikes [color_index='Intensity'] (cmap='Reds')
hv.Spikes(np.random.rand(20, 2), 'Mass', 'Intensity')

%%opts Spikes [spike_length=0.1] NdOverlay [show_legend=False]
hv.NdOverlay({i: hv.Spikes(np.random.randint(0, 100, 10), 'Time').options(position=0.1*i)
              for i in range(10)}).options(yticks=[((i+1)*0.1-0.05, i) for i in range(10)])

%%opts Spikes (alpha=0.2)
points = hv.Points(np.random.randn(500, 2))
points << hv.Spikes(points['y']) << hv.Spikes(points['x'])