rddensityUnique function

Internal function.

Find unique elements and their frequencies in a numeric vector. This function has a similar performance as the built-in R function unique.

rddensityUnique(x)

Arguments

• x: Numeric vector, already sorted in ascending order.

Returns

• unique: A vector containing unique elements in x.

• freq: The frequency of each element in x.

• index: The last occurrence of each element in x.