SciencesPo (version 1.02.12)

fillin: Make a data.frame Rectangular by filling missing records

Description

This function produces a complete rectangularization by adding observations with missing data so that all combinations (interactions) of the specified variables exist.

Usage

fillin(x, by, fill = NA)

Arguments

x

a data frame.

by

a vector of at least 2 variables from the data frame. If missing all variables in the data frame will be used.

fill

the value used to fill in, default is fill = 0.

Value

• a data object of the same class as x.

encoding

UTF-8

Examples

data <- data.frame(sex=c("female","male","male"),
race = c("black","black","white"), y = c(.5,.4,.1), x = c(32,40,53))

fillin(data, by=c(sex,race))

fillin(data, by=c(sex,race), fill=0)