tmavg

语法

tmavg(T, X, window)

参数说明和窗口计算规则请参考:tmFunctions

详情

在给定长度(以时间 T 衡量)的滑动窗口内计算 X 元素的平均值。

例子

T = 1 1 1 2 5 6
X = 1 4 2 -1 2 4
m = table(T as t,X as x)
select *, tmavg(t, x, 3) from m
t x tmavg_t
1 1 1
1 4 2.5
1 2 2.3333
2 -1 1.5
5 2 2
6 4 3
T = 2021.01.02 2021.01.02  2021.01.04  2021.01.05 2021.01.07 2021.01.08
X = 1 4 2 -1 2 4
m = table(T as t,X as x)
select *, tmavg(t, x, 3d) from m
t x tmavg_t
2021.01.02 1 1
2021.01.02 4 2.5
2021.01.04 2 2.3333
2021.01.05 -1 0.5
2021.01.07 2 0.5
2021.01.08 4 3
select *, tmavg(t, x, 1w) from m
t x tmavg_t
2021.01.02 1 1
2021.01.02 4 2.5
2021.01.04 2 2.3333
2021.01.05 -1 1.5
2021.01.07 2 1.6
2021.01.08 4 2

相关函数:mavg, avg