name2fun: Convert transformation name to function

In ngme2: Linear Latent Non-Gaussian Models with Flexible Distributions

Convert transformation name to function

Description

This function converts a transformation name to the corresponding function. Convertion is from original scale to real scale by default. Available transformations:

• exp4: exp(4x), inverse is log(x)/4

• exp2: exp(2x), inverse is log(x)/2

• tanh: Hyperbolic tangent transformation used for AR1 parameter, uses ar1_th2a and ar1_a2th

• identity: Identity function, no transformation

• exp: exp(x), inverse is log(x)

• sqrt: sqrt(x), inverse is x^2

• square: x^2, inverse is sqrt(x)

• log: log(x), inverse is exp(x)

Usage

name2fun(trans, inv = FALSE)

Arguments

trans	Character string specifying the transformation type from original scale to real scale
inv	Logical, if TRUE returns the transformation function from real scale to original scale

Value

A function that applies the specified transformation

ngme2 documentation built on May 20, 2026, 9:10 a.m.