matplotlib中的阴影图例行

Question

我想在图例中围绕线条遮挡,如下图所示.

我尝试使用'hatch',如下所示:

handles, labels = ax0.get_legend_handles_labels()

handles[0] = mpatches.Patch(facecolor='red', edgecolor='red', alpha=1.0, linewidth=0, label="Theory (MLL)", hatch='-')

handles[i].set_facecolor('pink')

first_legend = ax0.legend(handles, labels, loc=0, frameon=0, borderpad=0.1)

ax = ax0.add_artist(first_legend)

但这会导致矩形具有多行,如下所示:

Answer 1

您可以通过将两个句柄放在一个元组中来绘制两个句柄(请参阅本指南中有关HandlerTuple的内容:http://matplotlib.org/users/legend_guide.html).除此之外,为了使线条延伸到补丁的边缘,您可以使用普通线路处理器的自定义版本marker_pad = 0.

from matplotlib import pyplot as plt 
import matplotlib.patches as mpatches
from matplotlib.legend_handler import HandlerLine2D
import numpy as np

line, = plt.plot(range(10), color = 'red')
patch = mpatches.Patch(facecolor='pink', alpha=1.0, linewidth=0)
plt.legend([(patch, line)], ["Theory"], handler_map = {line : HandlerLine2D(marker_pad = 0)} )
plt.show()