The (weighted) contingency table as an object of class table,
an array of integer values.
Arguments
x
a vector that can be interpreted as a factor, or a matrix or
data.frame whose columns can be interpreted as factors.
weights
an optional numeric vector containing sample weights.
useNA
a logical indicating whether to include extra NA levels
in the table.
Author
Andreas Alfons and Stefan Kraft
Details
For each combination of the variables in x, the weighted number of
occurence is computed as the sum of the corresponding sample weights. If
weights are not specified, the function table is applied.