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我有創建時間戳的數據。和不同日期的可用性數據。我用分組的createdat數據:groupby month each axis
monthly_availability = summed_availability.groupby(pd.TimeGrouper(freq='M')).sum()
2015-08-18 2015-08-19 2015-09-09 2015-09-10 2015-09-11 \
createdat
2015-08-31 1.0 1.0 4.0 6.0 7.0
2015-09-30 NaN NaN 2.0 2.0 2.0
2015-10-31 NaN NaN NaN NaN NaN
2015-11-30 NaN NaN NaN NaN NaN
2015-12-31 NaN NaN NaN NaN NaN
現在我想爲行做同樣的
當我嘗試組軸1使用下面的代碼:
monthly_availability.groupby(pd.TimeGrouper(freq='M', axis=1), axis=1)
我得到以下錯誤:
TypeError Only valid with DatetimeIndex, TimedeltaIndex or PeriodIndex, but got an instance of 'Index'
Dateframe.info()給出
<class 'pandas.core.frame.DataFrame'>
DatetimeIndex: 19 entries, 2015-08-31 to 2017-02-28
Freq: M
Columns: 767 entries, 2015-08-18 00:00:00 to 2017-09-12 00:00:00
dtypes: float64(767)
memory usage: 114.0 KB
所有列標籤都是日期類型。