distance {neighbr}

Calculate the distance between two vectors.

Description

Calculate the distance between two vectors.

Usage

distance(x, y, measure)

Arguments

x, y

Numeric vectors.

measure

Distance measure ("euclidean" or "squared_euclidean").

Details

Distance measures in this package are based on those defined in the PMML specification. Distances are calculated using the following equations:

Euclidean: (\sum((x_i - y_i)^2))^0.5

Squared euclidean: \sum((x_i - y_i)^2)

The input vectors must be of the same length.

Value

The distance between x and y.

See Also

similarity, PMML comparison measures

Examples

distance(c(-0.5,1),c(0.4,1.6),"euclidean")
distance(c(-0.5,1),c(0.4,1.6),"squared_euclidean")