HH (version 3.1-5)

logit: Logistic and odds functions and their inverses.

Description

Logistic and odds functions and their inverses.

Usage

logit(p)
antilogit(x)

odds(p)
antiodds(o)

Arguments

p
Probability value, a vector of numbers between 0 and 1, inclusive.
x
Real number, a vector of numbers between -Inf and Inf.
o
Real number, a vector of numbers between 0 and Inf.

Value

  • Vector of real values log(p/(1-p)) for logit. Vector of probabilities exp(x)/(1+exp(x)) for antilogit with boundary values of -Inf and Inf for x correctly handled. Vector of real values p/(1-p) for odds. Vector of probabilities o/(o+1) for antiodds with the boundary value of Inf for o correctly handled.

Examples

Run this code
logit(seq(0, 1, .1))
antilogit(logit(seq(0, 1, .1)))

odds(seq(0, 1, .1))
antiodds(odds(seq(0, 1, .1)))

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