system_fetch_iiv {ubiquity}

Fetch Variability Terms

Description

Extract elements of the current variance/covariance matrix specified in the system file with <IIV:?:?> ?, <IIVCOR:?:?>?, <IIVSET:?:?> ?, <IIVCORSET:?:?>?

Usage

system_fetch_iiv(cfg, IIV1, IIV2)

Arguments

cfg

ubiquity system object

IIV1

row name of the variance/covariance matrix

IIV2

column name of the variance/covariance matrix

Value

Value from the variance/covariance matrix

See Also

system_set_iiv

Examples

# Creating a system file from the mab_pk example
fr = system_new(file_name        = "system.txt", 
                system_file      = "mab_pk", 
                overwrite        = TRUE, 
                output_directory = tempdir())

# Building the system 
cfg = build_system(system_file  = file.path(tempdir(), "system.txt"),
      output_directory          = file.path(tempdir(), "output"),
      temporary_directory       = tempdir())

# Covariance term for ETACL and ETAVc
val = system_fetch_iiv(cfg, IIV1="ETACL", IIV2="ETAVc")