Package: chiplot
Type: Package
Title: Chi-Plots for Assessing Bivariate and Multivariate Dependence
Version: 0.1.0
Authors@R: c(
    person("Nicholas I.", "Fisher", email = "nif@valuemetrics.com.au",
           role = c("aut", "cre", "cph")),
    person("Alan J.", "Lee", role = "aut"),
    person("ValueMetrics Australia", role = "cph",
           comment = "copyright holder of the geochem data"))
Description: Graphical methods for assessing dependence. The chi-plot of
    Fisher and Switzer (1985) <doi:10.1093/biomet/72.2.253> and
    (2001) <doi:10.1198/000313001317098248> supplements a scatterplot of two
    variables, producing characteristic patterns for different forms of
    association. Its multivariate extension (Fisher and Lee, 2026) uses
    generalized orthants and data depth to explore whether a multivariate
    distribution factorizes into independent blocks of variables, with
    permutation tests and guidelines. Functions are provided for single
    chi-plots, a scatterplot matrix with chi-plots above the diagonal,
    multivariate chi-plots for a given partition of the variables, and a
    search over all partitions. Computation-intensive parts are written in C.
License: GPL (>= 2)
Encoding: UTF-8
Depends: R (>= 4.0.0)
Imports: graphics, grDevices, stats
Suggests: fda.usc
LazyData: true
NeedsCompilation: yes
Packaged: 2026-10-23 04:35:39 UTC; Nick
Author: Nicholas I. Fisher [aut, cre, cph],
  Alan J. Lee [aut],
  ValueMetrics Australia [cph] (copyright holder of the geochem data)
Maintainer: Nicholas I. Fisher <nif@valuemetrics.com.au>
Repository: CRAN
Date/Publication: 2026-11-06 17:10:11 UTC
