margin.table
Compute table margin
For a contingency table in array form, compute the sum of table entries for a given index.
 Keywords
 array
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. The class of
x
is copied to the
output table, except in the summation case.
See Also
prop.table
and addmargins
.
Examples
library(base)
m < matrix(1:4, 2)
margin.table(m, 1)
margin.table(m, 2)
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