margins {reshape2}

R Documentation

Figure out margining variables.

Description

Given the variables that form the rows and columns, and a set of desired margins, works out which ones are possible. Variables that can't be margined over are dropped silently.

Usage

margins(vars, margins = NULL)

Arguments

vars	a list of character vectors giving the variables in each dimension
margins	a character vector of variable names to compute margins for. TRUE will compute all possible margins.

Value

list of margining combinations, or NULL if none. These are the combinations of variables that should have their values set to (all)

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