contextCount

contextCount(X, Y)

X and Y are vectors of the same length.

Count the number of positions that are not NULL in both X and Y.

contextCount(1 2 3, 1 NULL 3)
// output
2

contextCount(1..3,true false true)
// output
3

contextCount(1 2 NULL, 1 NULL 3)
// output
1

Related functions: contextSum, contextSum2