findInOrdered: Find indices of times in an ordered vector
Description
The indices point to the largest items in x that are less than or
equal the values in f. The method uses a bisection search, so the
time taken is proportional to length(f) * log2(length(x)).
Usage
findInOrdered(x, f)
Arguments
x
a numeric vector, in increasing order by value.
f
a numeric vector of items whose indices are sought.
Value
A numerical vector indicating the indices of left-sided neighbors.