mosaic (version 0.8-18)

evalFormula: Evaluate a formula

Description

Evaluate a formula

Usage

evalFormula(formula, data = parent.frame(), subset, ops = c("+", "&"))

Arguments

formula

a formula (y ~ x | z) to evaluate

data

a data frame or environment in which evaluation occurs

ops

a vector of operator symbols allowable to separate variables in rhs

subset

an optional vector describing a subset of the observations to be used. Currently only implemented when data is a data frame.

Value

• a list containing data frames corresponding to the left, right, and condition slots of formula

Examples

data(CPS85)
cps <- CPS85[1:6,]
cps
evalFormula(wage ~ sex & married & age | sector & race, data=cps)