如何在方框图上设置虚线轴

轴“盒”由4个“刺”组成,可通过 ax.spines

import matplotlib.pyplot as plt

fig, axes = plt.subplots(2,2)

linestyles = ["--","-.",":", (0,(5,2,1,4))]

for ax, ls in zip(axes.flat, linestyles):
    for spine in ax.spines.values():
        spine.set_linestyle(ls)
        spine.set_linewidth(2)
    ax.set_title("linestyle: {}".format(ls))

plt.tight_layout()
plt.show()