Test PathEffects

/home/docs/checkouts/readthedocs.org/user_builds/mpl-visual-context/envs/0.9.2/lib/python3.10/site-packages/seaborn/_oldcore.py:1498: FutureWarning: is_categorical_dtype is deprecated and will be removed in a future version. Use isinstance(dtype, CategoricalDtype) instead
  if pd.api.types.is_categorical_dtype(vector):
/home/docs/checkouts/readthedocs.org/user_builds/mpl-visual-context/envs/0.9.2/lib/python3.10/site-packages/seaborn/_oldcore.py:1119: FutureWarning: use_inf_as_na option is deprecated and will be removed in a future version. Convert inf values to NaN before operating instead.
  with pd.option_context('mode.use_inf_as_na', True):

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
import seaborn as sns

# Create the data : copied from examples/kde_ridgeplot.py
rs = np.random.RandomState(1979)
x = rs.randn(100)


fig, ax = plt.subplots(1, 1, num=1, clear=True)

sns.kdeplot(x, fill=True, lw=2, ec="r")

ax.set_ylim(ymin=-0.02)

from mpl_visual_context.patheffects import Partial, Open

p = ax.collections[0]

# The 1st half of the path is the bottom line, thus we only strke the 2nd half,
# and do not close the path.
p.set_path_effects([Partial(0.5, 1.0) | Open()])

plt.show()