margin.table

For a contingency table in array form, compute the sum of table entries for a given index.

Syntax

R Copy

margin.table(x, margin = NULL)

Arguments

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

Return Value

The relevant marginal table. The class of x is copied to the output table, except in the summation case.

Details

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

Examples

Example

R Copy

# NOT RUN {
m <- matrix(1:4, 2)
margin.table(m, 1)
margin.table(m, 2)
# }

See Also

prop.table and addmargins.