t.coef: Transformation of Coefficients.

Description Usage Arguments Details Value Author(s)

View source: R/methods.R

Description

This function performs transformation from the original parameterization into the 'VFP'-package internal re-parameterized form.

Usage

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## S3 method for class 'coef'
t(
  coeffs0,
  K = NULL,
  Maxi = NULL,
  model = NULL,
  signJ = NULL,
  eps = sqrt(.Machine$double.eps),
  ...
)

Arguments

coeffs0

(numeric) vector of function coefficients to be transformed into the re-parameterized form

K

(numeric) constant value 'K'

Maxi

(numeric) max. value

model

(integer) specifying which model shall be back-transformed

signJ

(integer) either 1 or -1

eps

(numeric) constant used instead of zero in case of log-transformation

...

additional parameters

Details

In the 'VFP' package models are re-parameterized to have better control over the constrained solution-space, i.e. only models may be fitted generating non-negative fitted values. This function is intended to be for internal use only.

Value

(numeric) vector of coefficients in re-parameterized form

Author(s)

Andre Schuetzenmeister andre.schuetzenmeister@roche.com Florian Dufey florian.dufey@roche.com


VFP documentation built on Dec. 21, 2021, 1:06 a.m.

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