circ_dist: Pairwise Distance Between Two Circular Variables

In jhsiao999/peco: A Supervised Approach for Predicting Cell Cycle Progression Using Single-Cell RNA-seq Data

Description

We define distance between two angles as 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 the angles.

Author(s)

Joyce Hsiao, Matthew Stephens

Examples

# 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 zero 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))

jhsiao999/peco documentation built on Nov. 21, 2020, 5:34 p.m.