simstudy (version 0.7.0)

addColumns: Add columns to existing data set

Description

Add columns to existing data set

Usage

addColumns(dtDefs, dtOld, envir = parent.frame())

Value

an updated data.table that contains the added simulated data

Arguments

dtDefs

name of definitions for added columns

dtOld

name of data table that is to be updated

envir

Environment the data definitions are evaluated in. Defaults to base::parent.frame.

Examples

# New data set

def <- defData(varname = "xNr", dist = "nonrandom", formula = 7, id = "idnum")
def <- defData(def, varname = "xUni", dist = "uniform", formula = "10;20")

dt <- genData(10, def)

# Add columns to dt

def2 <- defDataAdd(varname = "y1", formula = 10, variance = 3)
def2 <- defDataAdd(def2, varname = "y2", formula = .5, dist = "binary")
def2

dt <- addColumns(def2, dt)
dt