idigamma {bzinb}

Inverse digamma function

Description

inverse of digamma. digamma function is the first derivative of gamma function divided by gamma function.

Usage

idigamma(y)

Arguments

y

a numeric vector.

Author(s)

Hunyong Cho, Chuwen Liu, Jinyoung Park, and Di Wu

Examples

idigamma(2)
plot(digamma, 0.1, 3)
plot(idigamma, -10.4, 0.9)