如何在 matplotlib 标题中包含符号

Question

我想在 matplotlib 标题中包含符号，但以下代码不起作用。

import matplotlib.pyplot as plt
import numpy as np

N_combs=10
t1 = np.random.randint(100, size=(N_combs,2))
g1=np.random.randint(100, size=(N_combs,2))
plt.plot(range(100), np.random.randn(100, N_combs))    
plt.title([rf'$\tau_c1={x} \tau_c2={y} \Delta G_{{01}}={i} \Delta G_{{01}}={j}$' for x,y in t1[0] for i,j in g1[0]])

错误：

  File "<ipython-input-972-589f95b4b1cf>", line 8, in <module>
    plt.title([rf'$\tau_c1={x} \tau_c2={y} \Delta G_{{01}}={i} \Delta G_{{01}}={j}$' for x,y in t1[0] for i,j in g1[0]])

  File "<ipython-input-972-589f95b4b1cf>", line 8, in <listcomp>
    plt.title([rf'$\tau_c1={x} \tau_c2={y} \Delta G_{{01}}={i} \Delta G_{{01}}={j}$' for x,y in t1[0] for i,j in g1[0]])

TypeError: cannot unpack non-iterable numpy.int32 object

相反，如果我使用 plt.legend，它就可以工作。

Answer 1

将每个 Latex 字符串与格式化函数结合起来。

(plt.title(r'$\tau_c1=$'+'{}'.format(t1[0][0])
   +r'$\tau_c2=$'+'{}'.format(t1[0][1])
   +r'$\Delta G_{{01}}=$'+'{}'.format(g1[0][1])
   +r'$\Delta G_{{01}}=$'+'{}'.format(g1[0][1]))