mars.dataframe.DataFrame.tshift¶
- DataFrame.tshift(periods: int = 1, freq=None, axis=0)¶
Shift the time index, using the index’s frequency if available.
- 参数
periods (int) – Number of periods to move, can be positive or negative.
freq (DateOffset, timedelta, or str, default None) – Increment to use from the tseries module or time rule expressed as a string (e.g. ‘EOM’).
axis ({0 or ‘index’, 1 or ‘columns’, None}, default 0) – Corresponds to the axis that contains the Index.
- 返回
shifted
- 返回类型
Series/DataFrame
提示
If freq is not specified then tries to use the freq or inferred_freq attributes of the index. If neither of those attributes exist, a ValueError is thrown