logit function

Logit and inverse logit transforms

The logit transformation (i.e. the log of the odds) and its inverse (also called expit).

inv.logit(a)

logit(p)

Arguments

• a: A vector of real values.
• p: A vector of probabilities.

Returns

inv.logit returns a vector of the same length as a of the inverse logit transformed values. This function is also known as the expit-function.

logit returns a vector of the same length as p with the log odds of p.

Examples

p <- runif(100)
print(a <- GMCM:::logit(p))
p - GMCM:::inv.logit(a)

See Also

Used in tt and inv.tt.

Author(s)

Anders Ellern Bilgrau anders.ellern.bilgrau@gmail.com