get_ellipse: Calculate ellipse polygon coordinates from foci and...

In mrc-ide/genescaper: Allele frequency mapping and outlier detection

Calculate ellipse polygon coordinates from foci and eccentricity

Description

TODO calculate ellipse polygon coordinates from foci and eccentricity.

Usage

get_ellipse(f1 = c(-3, 0), f2 = c(3, 0), ecc = 0.8, n = 100)

Arguments

f1	x- and y-coordinates of the first focus.
f2	x- and y-coordinates of the second focus.
ecc	eccentricity of the ellipse, defined as half the distance between foci divided by the semi-major axis. We can say e = sqrt{1 - b^2/a^2}, where e is the eccentricity, a is the length of the semi-major axis, and b is the length of the semi-minor axis. Eccentricity ranges from 0 (perfect circle) to 1 (straight line between foci), although eccentricity of 0 is not allowed in this function as it would lead to an infinitely large circle.
n	number of points in polygon.

mrc-ide/genescaper documentation built on May 25, 2022, 10:46 p.m.