add_margins

rows

cols

Either <code>TRUE</code> to compute all margins, or a character
vector of margin names, which may include any name in <code>rows</code> or
<code>cols</code>, or <code>"grand_row"</code> or <code>"grand_col"</code>.

margins

plyr is a set of tools that solves a common set of
        problems: you need to break a big problem down into manageable
        pieces, operate on each pieces and then put all the pieces back
        together.  For example, you might want to fit a model to each
        spatial location or time point in your study, summarise data by
        panels or collapse high-dimensional arrays to simpler summary
        statistics.

add_margins: Add margins to a data frame.

Description

Usage

Arguments

Details