Bug summary

The only way (that I am aware of) to control the linewidth of hatches is through an rc parameter. But temporarily modifying the parameter with plt.rc_context has not effect.

Code for reproduction

import matplotlib.pyplot as plt

plt.figure().subplots().bar([0, 1], [1, 2], hatch=["/", "."], fc="r")

with plt.rc_context({"hatch.linewidth": 5}):
    plt.figure().subplots().bar([0, 1], [1, 2], hatch=["/", "."], fc="g")

plt.rc("hatch", linewidth=5)
plt.figure().subplots().bar([0, 1], [1, 2], hatch=["/", "."], fc="b")

Actual outcome

Expected outcome

That second image (the green bars) should have thick hatches.

FWIW I think hatches ought to have an actual API, but given that they don't, this limitation makes them really hard to work with.

Operating system

macos

Matplotlib Version

3.4.3

Matplotlib Backend

inline