margin.table {base}R Documentation

Compute table margin

Description

Compute the sum of table entries for a given index.

Usage

margin.table(x, margin=NULL)

Arguments

x an array
margin index number (1 for rows, etc.)

Details

This is really just apply(x,margin,sum) packaged up for newbies, except that if margin has length zero you get sum(x).

Value

The relevant marginal table.

Author(s)

Peter Dalgaard

Examples

m<-matrix(1:4,2)
margin.table(m,1)
margin.table(m,2)