# generateETA: Generate individual random effects from a multivariate normal... In linpk: Generate Concentration-Time Profiles from Linear PK Systems

## Description

Generate individual random effects from a multivariate normal distribution.

## Usage

 1 2 generateETA(n, omegaLT, omega = LTmat(omegaLT), eta.names = sprintf("ETA%d", 1:nrow(omega))) 

## Arguments

 n The number of individuals. omegaLT A numeric vector giving the elements of the lower triangle of the covariance matrix by row. omega The covariance matrix. eta.names A character vector of names for each random effect.

## Value

An n \times p matrix, where each row contains the vector of random effects for one individual (p is the size of the covariance matrix).

LTmat blockdiag
 1 2 omegaLT <- c(0.123, 0.045, 0.678) generateETA(10, omegaLT)