R: Cross Tabulation

ctabs {libcoin} | R Documentation

## Cross Tabulation

### Description

Efficient weighted cross tabulation of two factors and a block

### Usage

    ctabs(ix, iy = integer(0), block = integer(0), weights = integer(0),
          subset = integer(0), checkNAs = TRUE)

### Arguments

`ix` | a integer of positive values with zero indicating a missing.
`iy` | an optional integer of positive values with zero indicating a missing.
`block` | an optional blocking factor without missings.
`weights` | an optional vector of weights, integer or double.
`subset` | an optional integer vector indicating a subset.
`checkNAs` | a logical for switching off missing value checks.

### Details

A faster version of `xtabs(weights ~ ix + iy + block, subset)`.

### Value

If `block` is present, a three-way table. Otherwise, a one- or two-dimensional table.

### Examples

    ctabs(ix = 1:5, iy = 1:5, weights = 1:5 / 5)

[Package libcoin version 1.0-5 Index]