defRepeatAdd: Add multiple (similar) rows to definitions table that will be...

In simstudy: Simulation of Study Data

Add multiple (similar) rows to definitions table that will be used to add data to an existing data.table

Description

Add multiple (similar) rows to definitions table that will be used to add data to an existing data.table

Usage

defRepeatAdd(
  dtDefs = NULL,
  nVars,
  prefix,
  formula,
  variance = 0,
  dist = "normal",
  link = "identity",
  id = "id"
)

Arguments

dtDefs	Definition data.table to be modified
nVars	Number of new variables to define
prefix	Prefix (character) for new variables
formula	An R expression for mean (string)
variance	Number or formula
dist	Distribution. For possibilities, see details
link	The link function for the mean, see details
id	A string indicating the field name for the unique record identifier

Details

The possible data distributions are: 'r paste0(.getDists(),collapse = ", ")'.

Value

A data.table named dtName that is an updated data definitions table

See Also

[distributions]

Examples

def <- defRepeatAdd(
  nVars = 4, prefix = "g", formula = "1/3;1/3;1/3",
  variance = 0, dist = "categorical"
)
def <- defDataAdd(def, varname = "a", formula = "1;1", dist = "trtAssign")
def <- defRepeatAdd(def, 8, "b", formula = "5 + a", variance = 3, dist = "normal")
def <- defDataAdd(def, "y", formula = "0.10", dist = "binary")

def

simstudy documentation built on Nov. 23, 2023, 1:06 a.m.