#### Ridgeline plot

A ridgeline plot ([previously known as Joy Plot](https://serialmentor.com/blog/2017/9/15/goodbye-joyplots)) shows the distribution of a numerical value for several groups. They can be used for visualizing changes in distributions over time or space.

import plotly.graph_objects as go

from plotly.colors import n_colors

import numpy as np

data = (np.linspace(1, 2, 12)[:, np.newaxis] * np.random.randn(12, 200) +

(np.arange(12) + 2 * np.random.random(12))[:, np.newaxis])

colors = n_colors('rgb(5, 200, 200)', 'rgb(200, 10, 10)', 12, colortype='rgb')

fig = go.Figure()

for data_line, color in zip(data, colors):

fig.add_trace(go.Violin(x=data_line, line_color=color))

fig.update_traces(orientation='h', side='positive', width=3, points=False)

fig.update_layout(xaxis_showgrid=False, xaxis_zeroline=False)

fig.show()