cumfirstNot
Syntax
cumfirstNot(X, [k])
Please see Cumulative Window Functions (cum-functions) for the parameters and windowing logic.
Details
Return the last element of X that is not k. If k is unspecified, return the last non-NULL element.
Examples
$ x=[NULL,1,2,6,NULL,3,4,NULL]
$ cumfirstNot(x);
[,1,1,1,1,1,1,1]
$ cumfirstNot(x, 1)
[,,2,2,2,2,2,2]
$ m=matrix(1 2 3 NULL 4, NULL NULL 8 8 9);
$ m;
#0 |
#1 |
|---|---|
1 |
|
2 |
|
3 |
8 |
8 |
|
4 |
9 |
$ cumfirstNot(m);
#0 |
#1 |
|---|---|
1 |
|
1 |
|
1 |
8 |
1 |
8 |
1 |
8 |
Related function: firstNot