circ_dist {peco} | R Documentation

## Pairwise distance between two circular variables

### Description

We define distance between two angles: the minimum of the differences in both clockwise and counterclockwise directions.

### Usage

    circ_dist(y1, y2)

### Arguments

`y1` | A vector of angles.
`y2` | A vector of angles.

### Value

A vector of distances between angles.

### Author(s)

Joyce Hsiao, Matthew Stephens

### Examples

    # a vector of angles
    theta_ref <- seq(0,2*pi, length.out=100)

    # shift the origin of theta_ref to pi
    theta_compare <- shift_origin(theta_ref, origin = pi)
    mean(circ_dist(theta_ref, theta_compare))

    # after rotation of angles, difference is 0 between the original
    # and the shifted angles
    theta_compare_rotated <- rotation(ref_var=theta_ref,
        shift_var=theta_compare)
    mean(circ_dist(theta_ref, theta_compare_rotated))

[Package peco version 1.2.0 Index]