Python 如何使Matplotlib标题以图形为中心，而图例框则以图形为中心

发布于04月03日

我有一个图表，上面有情节外的传说.我有标题在图表的中心，我想保持它的中心.问题是，标题只围绕着图表，而不是图表和图例作为一个组.所以它让我的情节看起来总是扭曲的: [1]:https://i.stack.imgur.com/dOlpS.png人

有没有一种方法可以将图表移到一边，使标题显示在两者的中心？

最小生殖率:

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0,10,1000)
y1 = np.sin(x)
y2 = np.cos(x)

plt.plot(x,y1)
plt.plot(x,y2)
plt.title("A very long title that makes the graph shorter than the title itself, it's so long it makes me sick to the core")
plt.legend(["sin x", "cos x"], bbox_to_anchor = [1,0.5], loc = "center left", fontsize = 20)
plt.show()

推荐答案

您的方法相当于在matplotlib的对象框架中执行以下操作.

import matplotlib.pyplot as plt

fig, ax = plt.subplots(constrained_layout=True)

ax.plot(x,y1)
ax.plot(x,y2)
ax.legend(["sin x", "cos x"], bbox_to_anchor = [1,0.5], loc = "center left", fontsize = 20)
ax.set_title("A very long title that makes the graph shorter than the title itself,\n it's so long it makes me sick to the core.\n")

基本上，标题被分配给实际的情节(ax对象).您需要的是将标题分配给整个图像，这将包括情节和图例(即图形对象).这将是新的结果.

import matplotlib.pyplot as plt

fig, ax = plt.subplots(constrained_layout=True)

ax.plot(x,y1)
ax.plot(x,y2)
ax.legend(["sin x", "cos x"], bbox_to_anchor = [1,0.5], loc = "center left", fontsize = 20)
fig.suptitle("A very long title that makes the graph shorter than the title itself,\n it's so long it makes me sick to the core.\n")