double mode(dataset vd)

• Returns the most frequently occurring value in the input dataset.

vector modes(dataset vd)

• Return a vector of the most frequently occurring values in the input dataset.

• This will return more than one result if there are multiple modes.

Syntax: Unique(vector<string> vs[, int Sort, int Occurrence, int sort2])

• sort2 = 0 (default), no occurrence sort.

• sort2 = 1, sort by occurrence ascending.

• sort2 = 2, sort by occurrence descending.