Local Association Measures

Implements the estimation of local (and global) association measures: Ducher's Z, pointwise mutual information and normalized pointwise mutual information. The significance of local (and global) association is accessed using p-values estimated by permutations. Finally, using local association subgroup analysis, it identifies if the association between variables is dependent on the value of another variable.


The zebu R package implements different tools related to local association measures in three main functions. It replaces the previous web application written using shiny.

  • lassie estimates local (and global) association measures: Ducher's Z, pointwise mutual information and normalized pointwise mutual information.

  • permtest accesses the significance of local (and global) association values using p-values estimated by permutations.

  • subgroups identifies if the association between variables is dependent on the value of another variable.

Install R and RStudio.

Get the released version from CRAN:

install.packages("zebu")

or the development version from Github:

# install.packages("devtools")
devtools::install_github("olivmrtn/zebu")

Please read the R vignette here or by typing vignette(“zebu") in the R console.

zebu 0.1.0 Copyright (C) 2016

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

The GNU General Public License is available at http://www.gnu.org/licenses/

The source code can be found at https://github.com/olivmrtn/zebu

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Reference manual

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install.packages("zebu")

0.1.0 by Olivier M. F. Martin, 6 months ago


http://github.com/olivmrtn/zebu


Report a bug at https://github.com/olivmrtn/zebu/issues


Browse source code at https://github.com/cran/zebu


Authors: Olivier M. F. Martin [aut, cre], Michel Ducher [aut]


Documentation:   PDF Manual  


GPL-3 license


Imports ggplot2, reshape2, pbapply, plyr, parallel

Suggests knitr, rmarkdown, devtools


See at CRAN