chiplot: Chi-Plots for Assessing Bivariate and Multivariate Dependence
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.
| Version: |
0.1.0 |
| Depends: |
R (≥ 4.0.0) |
| Imports: |
graphics, grDevices, stats |
| Suggests: |
fda.usc |
| Published: |
2026-11-06 |
| DOI: |
10.32614/CRAN.package.chiplot (may not be active yet) |
| 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 at valuemetrics.com.au> |
| License: |
GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: |
yes |
| Materials: |
NEWS |
| CRAN checks: |
chiplot results |
Documentation:
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