在图例上打印多个列表名称

Question

我想在图例上打印列表名称而不是打印列表。任何的想法？ 代码如下：

import numpy as np

m = [x,y]
fig = plt.figure()
ax = plt.subplot(111)
#j = ["1","1","1","1","1"]

for i in m:
    ax.plot(i, label='$variable = %s$'%i)

# Shrink current axis by 20%
box = ax.get_position()
ax.set_position([box.x0, box.y0, box.width * 0.8, box.height])

# Put a legend to the right of the current axis
ax.legend(loc='center left', bbox_to_anchor=(1, 0.5))

plt.show()

在图例中我想要变量 = x 和变量 = y

Answer 1

将['x','y'] 作为第一个参数传递给 ax.legend 方法。

ax.legend(['x','y'], loc='center left', bbox_to_anchor=(1, 0.5))

Answer 2

打印列表的原因是因为行：

m = [x,y]

由于 x 和 y 是包含数组的变量，python 正在打印数组。假设您想要数组名称，即“x”和“y”具有相同的容量，您必须执行以下操作：

m = [x,y]
n=['x','y']
fig = plt.figure()
ax = plt.subplot(111)
#j = ["1","1","1","1","1"]

for i in n:
    ax.plot(i, label='$variable = %s$'%i)

你也可以创建一个字典：

m = {'x':x,'y':y}
fig = plt.figure()
ax = plt.subplot(111)
#j = ["1","1","1","1","1"]

for i in m:
    ax.plot(i, label='$variable = %s$'%i)

Answer 3

这可能是一种可能性：

import numpy as np

m = [x,y]
n = ["x","y"]
fig = plt.figure()
ax = plt.subplot(111)
#j = ["1","1","1","1","1"]

for i,j in zip(m,n):
    ax.plot(i, label='$variable = %s$'%j)

# Shrink current axis by 20%
box = ax.get_position()
ax.set_position([box.x0, box.y0, box.width * 0.8, box.height])

# Put a legend to the right of the current axis
ax.legend(loc='center left', bbox_to_anchor=(1, 0.5))

plt.show()

#工作代码。