libcoin (version 1.0-5)

ctabs: 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.

Value

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

Details

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

Examples

# NOT RUN {
ctabs(ix = 1:5, iy = 1:5, weights = 1:5 / 5)
# }

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