mstdpTopN
Syntax
mstdpTopN(X, S, window, top, [ascending=true], [tiesMethod=’oldest’])
Please see Moving TopN Functions (mTopN functions) for the parameters and windowing logic.
Details
After stably sorting S in the specified ascending order, the function calculates the population standard deviation of the first top elements of X in the sliding window.
Examples
$ X = 1..7
$ S = 0.3 0.5 0.1 0.1 0.5 0.2 0.4
$ mstdpTopN(X, S, 4, 2)
[0,0.5,1,0.5,0.5,0.5,1]
$ X = NULL 1 2 3 4 NULL 5
$ S = 3 5 1 1 5 2 4
$ mstdpTopN(X, S, 4, 2)
[,0,0,0.5,0.5,0.5,0]
$ X = matrix(1..5, 6..10)
$ S = 2022.01.01 2022.02.03 2022.01.23 2022.04.06 2021.12.29
$ mstdpTopN(X, S, 3, 2)
#0 |
#1 |
|---|---|
0 |
0 |
0.5 |
0.5 |
1 |
1 |
0.5 |
0.5 |
1 |
1 |
$ X = matrix(1..5, 6..10)
$ S = matrix(2022.01.01 2022.02.03 2022.01.23 NULL 2021.12.29,NULL 2022.02.03 2022.01.23 2022.04.06 NULL)
$ mstdpTopN(X, S, 3, 2)
#0 |
#1 |
|---|---|
0 |
|
0.5 |
0 |
1 |
0.5 |
0.5 |
0.5 |
1 |
0.5 |
Related function: mstdp