我有以下代码:
import pandas.util.testing as testing
import numpy as np
import matplotlib.pyplot as plt
import pandas as pd
import matplotlib as mpl
df = testing.makeTimeDataFrame(freq='MS')
with mpl.rc_context(rc={'font.family': 'serif', 'font.weight': 'bold', 'font.size': 12}):
fig = plt.figure(figsize= (12, 6))
fig.add_subplot(2, 2, (1,2))
ax2 = ax.twinx()
df['A'].plot(ax=ax, color = 'g')
df['B'].plot(ax=ax2, color ='g')
fig.add_subplot(223)
df['C'].plot(color='r')
fig.add_subplot(224)
df['D'].plot()
fig.tight_layout()
plt.show()
Which produces the following plot.
我正试着在相同的顶部绘制df['A']和df['B'].你能告诉我我遗漏了什么吗？