semi_ellipse_perimeter: Half ellipse perimeter approximation (ellipsoid assumption)

Description Usage Arguments Value Author(s)

View source: R/retina-package.r

Description

Ramanujan approximation divided by two. p \approx π * [3(a+b)-√{(3a + b)(a + 3b)}] in half

Usage

1

Arguments

a

Major axis (longer)

b

Minor axis (shorter)

Value

semielliptical perimeter in same units as input

Author(s)

Brian Cohn brian.cohn@usc.edu, Lars Schmitz


yinscapital/retina-analysis-reference documentation built on May 22, 2019, 12:40 p.m.