This function allows you to calculate the N-th highest number of a
vector. In other words, it is the N-th max; it calculates the maximum
after removing (n-1) higher numbers (maxes).
Note that k=1 yields the traditional global maximum.
Usage
nth_highest(x, k = 1)
Arguments
x
Data vector.
k
The N-th highest value or N-th max. For example, k=2 yields
the second highest value.
Note that k=1 gives the highest value aka the global max. Defaults to 1.