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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 |
| 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 |
| Reference manual: | chiplot.html , chiplot.pdf |
| Package source: | chiplot_0.1.0.tar.gz |
| Windows binaries: | r-devel: chiplot_0.1.0.zip, r-release: chiplot_0.1.0.zip, r-oldrel: not available |
| macOS binaries: | r-release (arm64): chiplot_0.1.0.tgz, r-oldrel (arm64): chiplot_0.1.0.tgz, r-release (x86_64): chiplot_0.1.0.tgz, r-oldrel (x86_64): chiplot_0.1.0.tgz |
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