Horizontal violins

orientation="horizontal" lays the violins along the x axis, which keeps long category names readable. The inner marks follow the orientation.

Live figure — pick a tool, then zoom, pan, point-pick or annotate. Nothing is active until a tool is selected.

View this figure’s Vega export ↗ — the raw JSON spec, rendered live by a real Vega engine.

View this figure’s Vega-Lite export ↗ — the raw JSON spec(s), rendered live by a real Vega-Lite engine.

import numpy as np
import plotpress

rng = np.random.default_rng(7)
groups = [
    rng.normal(5.0, 0.35, 300),
    rng.normal(5.9, 0.52, 300),
    rng.normal(6.6, 0.64, 300),
]

fig, ax = plotpress.subplots()
ax.violinplot(groups, orientation="horizontal", cut=2.0, inner="box")
ax.set_yticks([1, 2, 3])
ax.set_yticklabels(["setosa", "versicolor", "virginica"])
ax.set_xlabel("sepal length (cm)")
ax.set_title('violinplot(orientation="horizontal", inner="box")')
fig.tight_layout()