margin.table {base} | R Documentation |
Compute the sum of table entries for a given index.
margin.table(x, margin=NULL)
x |
an array |
margin |
index number (1 for rows, etc.) |
This is really just apply(x,margin,sum)
packaged up for
newbies, except that if margin
has length zero you get
sum(x)
.
The relevant marginal table.
Peter Dalgaard
m<-matrix(1:4,2) margin.table(m,1) margin.table(m,2)