bcdiff: Convert 3d array of CATA differences

In cata: Analysis of Check-All-that-Apply (CATA) Data

Convert 3d array of CATA differences

Description

products, M attributes) to a four-dimensional array of product comparisons (I assessors, J(J-1)/2 product comparisons, two outcomes (of type b or c), M attributes)

Usage

bcdiff(X)

Arguments

X	three-dimensional array (I assessors, J products, M attributes) where values are 0 (not checked) or 1 (checked)

Value

three-way array of I ]assessors, J(J-1)/2 product comparisons, and M attributes.

Author(s)

J.C. Castura

References

Castura, J.C., Meyners, M., Varela, P., & Næs, T. (2022). Clustering consumers based on product discrimination in check-all-that-apply (CATA) data. Food Quality and Preference, 104564. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/j.foodqual.2022.104564")}.

Examples

# Get the 3d array of CATA differences for the first 8 consumers
head(bcdiff <- bcdiff(bread$cata[1:8,,]))

cata documentation built on Aug. 1, 2026, 1:06 a.m.