所以,让我们说我有DatetimeIndex:ed这样的数据(当然会有几天):
X Y Z
timestamp
2013-01-02 10:00:13.295000 366 -8242 -1820
2013-01-02 10:00:13.329000 366 -8016 -1820
2013-01-02 10:00:13.352000 32 -8016 -1820
2013-01-02 10:00:13.882000 32 -9250 -1820
2013-01-02 10:00:15.076000 -302 -9250 -1820
我想要像这样的MultiIndexed:
X Y Z
Date Time
2013-01-02 10:00:13.295000 366 -8242 -1820
10:00:13.329000 366 -8016 -1820
10:00:13.352000 32 -8016 -1820
10:00:13.882000 32 -9250 -1820
10:00:15.076000 -302 -9250 -1820
我知道你可以(可能)提取DatetimeIndex,将它与.date()和.time()分成两列并将其设置为Dataframe的新索引,但还有更多&# 39; pandaic'这样做的方式?在我看来,这种功能会派上用场......
答案 0 :(得分:9)
我能想到的最佳方式是
In [13]: df.index = pd.MultiIndex.from_arrays([df.index.date, df.index.time], names=['Date','Time'])
In [14]: df
Out[14]:
X Y Z
Date Time
2013-01-02 10:00:13.295000 366 -8242 -1820
10:00:13.329000 366 -8016 -1820
10:00:13.352000 32 -8016 -1820
10:00:13.882000 32 -9250 -1820
10:00:15.076000 -302 -9250 -1820
[5 rows x 3 columns]