相关疑难解决方法(0)

有一个Pandas DataFrame:

<class 'pandas.core.frame.DataFrame'>
Int64Index: 300 entries, 5220 to 5519
Data columns (total 3 columns):
Date             300 non-null datetime64[ns]
A                300 non-null float64
B                300 non-null float64
dtypes: datetime64[ns](1), float64(2)
memory usage: 30.5 KB

我想绘制A和B系列与日期的关系.

plt.plot_date(data['Date'], data['A'], '-')
plt.plot_date(data['Date'], data['B'], '-')

然后我想在A和B系列之间的区域上应用fill_between():

plt.fill_between(data['Date'], data['A'], data['B'],
                where=data['A'] >= data['B'],
                facecolor='green', alpha=0.2, interpolate=True)

哪个输出:

TypeError: ufunc 'isfinite' not supported for the input types, and the inputs
could not be safely coerced to any supported types according to the casting 
rule ''safe''

matplotlib是否在 …