addColumns {simstudy}

Add columns to existing data set

Description

Add columns to existing data set

Usage

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

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.

Value

an updated data.table that contains the added simulated data

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