existsBackgroundVariables {eatTools}

Internally needed function for consistency checks and data preparation.

Description

Function is necessary for eatRep and eatModel as well and therefore exported to namespace.

Usage

existsBackgroundVariables (dat, variable, warnIfMissing = FALSE,
     stopIfMissingOnVars = NULL)

Arguments

dat

A data frame

variable

column number or variable name

warnIfMissing

Logical: gives a warning if the variable contains missing values

stopIfMissingOnVars

Character vector of variable names. Only for these variables, warnings as raised through warnIfMissing = TRUE are turned into errors.

Value

a structured list of variable names

Examples

data(mtcars)
existsBackgroundVariables(mtcars, 2:4)