Periodic aggregate（周期性聚合(Periodic aggregate)）¶
Periodic aggregates are similar to Rolling aggregates except that they downsample the data.
- If you have daily data and perform a Rolling aggregate using a window of one week with an average function, your chart will return a series with one point per day, with each point representing the previous week’s average.
- However, if you do a Periodic aggregate with a window of one week, your new series will have one point per week rather than one point per day.
Input type¶
Time series
Output type¶
Time series
Examples¶
Usage information¶
| Functionality | Availability |
|---|---|
| Standard Quiver card | Supported |
| Transform table transform | Supported |
See also¶
中文翻译¶
周期性聚合(Periodic aggregate)¶
周期性聚合与滚动聚合(Rolling aggregate)类似，区别在于它对数据进行降采样。
- 如果您拥有每日数据，并使用一周窗口的滚动聚合配合平均值函数，图表将返回一个每天一个数据点的序列，每个点代表前一周的平均值。
- 然而，如果您使用一周窗口的周期性聚合，新序列将每周只有一个数据点，而不是每天一个数据点。
输入类型(Input type)¶
时间序列(Time series)
输出类型(Output type)¶
时间序列(Time series)
示例(Examples)¶
使用信息(Usage information)¶
| 功能 | 可用性 |
|---|---|
| 标准 Quiver 卡片 | 支持 |
| 转换表转换 | 支持 |