lowerBound

Syntax

lowerBound(X,Y)

Arguments

X is an increasing vector, or an indexed series/matrix.

Y is a scalar, vector, array vector, tuple, matrix, dictionary or table.

Details

For each element y in Y, get the first element that is greater than or equal to y and return its index in X. If no element is found, return the length of X.

Examples

X = [1,3,5];
Y = [5,6,7];
Z = lowerBound(X,Y);
Z
// output: [2,3,3]

index = [2023.05.04, 2023.05.06, 2023.05.07, 2023.05.10]
s = indexedSeries(index, 1..4)
y=[2023.05.04, 2023.05.06, 2023.05.09]

lowerBound(s,y)