prop.table               package:base               R Documentation

Express table entries as fraction of marginal table

Description:

     This is really 'sweep(x, margin, margin.table(x, margin), "/")'
     for newbies, except that if 'margin' has length zero, then one
     gets 'x/sum(x)'.

Usage:

     prop.table(x, margin=NULL)

Arguments:

       x: table 

  margin: index, or vector of indices to generate margin for

Value:

     Table like 'x' expressed relative to 'margin'

Author(s):

     Peter Dalgaard

See Also:

     'margin.table'

Examples:

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

