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

np.random.seed(37)
violin = hv.Violin(np.random.randn(1000), vdims='Value')
violin

violin.relabel(group='Medians').opts(inner='medians', bandwidth=0.1)

groups = [chr(65+g) for g in np.random.randint(0, 3, 200)]
violin = hv.Violin((groups, np.random.randint(0, 5, 200), np.random.randn(200)),
                   ['Group', 'Category'], 'Value')

violin.opts(aspect=2.5, fig_size=300)