combinIT: A Combined Intercation Test for Unreplicated Two-Way Tables

There are several non-functional-form-based interaction tests for testing interaction in unreplicated two-way layouts. However, no single test can detect all patterns of possible interaction and the tests are sensitive to a particular pattern of interaction. This package combines six non-functional-form-based interaction tests for testing additivity. These six tests were proposed by Boik (1993) <doi:10.1080/02664769300000004>, Piepho (1994), Kharrati-Kopaei and Sadooghi-Alvandi (2007) <doi:10.1080/03610920701386851>, Franck et al. (2013) <doi:10.1016/j.csda.2013.05.002>, Malik et al. (2016) <doi:10.1080/03610918.2013.870196> and Kharrati-Kopaei and Miller (2016) <doi:10.1080/00949655.2015.1057821>. The p-values of these six tests are combined by Bonferroni, Sidak, Jacobi polynomial expansion, and the Gaussian copula methods to provide researchers with a testing approach which leverages many existing methods to detect disparate forms of non-additivity. This package is based on the following published paper: Shenavari and Kharrati-Kopaei (2018) "A Method for Testing Additivity in Unreplicated Two-Way Layouts Based on Combining Multiple Interaction Tests". In addition, several sentences in help files or descriptions were copied from that paper.

Version: 1.5.0
Depends: R (≥ 4.0)
Imports: Rcpp, mvtnorm
LinkingTo: Rcpp, RcppArmadillo
Suggests: MASS, Matrix
Published: 2022-06-17
Author: Zahra Shenavari [aut], Hossein Haghbin ORCID iD [aut, cre], Mahmood Kharrati-Kopaei ORCID iD [aut], Seyed Morteza Najibi [aut]
Maintainer: Hossein Haghbin <haghbin at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Materials: NEWS
CRAN checks: combinIT results


Reference manual: combinIT.pdf


Package source: combinIT_1.5.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): combinIT_1.5.0.tgz, r-oldrel (arm64): combinIT_1.5.0.tgz, r-release (x86_64): combinIT_1.5.0.tgz, r-oldrel (x86_64): combinIT_1.5.0.tgz
Old sources: combinIT archive


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