A variety of multivariable data summary statistics and constructions have been proposed, either to generalize univariable analogs or to exploit multivariable properties. Notable among these are the bivariate peelings surveyed by Green (1981, ISBN:978-0-471-28039-2), the bag-and-bolster plots proposed by Rousseeuw &al (1999) <doi:10.1080/00031305.1999.10474494>, and the minimum spanning trees used by Jolliffe (2002) <doi:10.1007/b98835> to represent high-dimensional relationships among data in a low-dimensional plot. Additionally, biplots of singular value–decomposed tabular data, such as from principal components analysis, make use of vectors, calibrated axes, and other representations of variable elements to complement point markers for case elements; see Gabriel (1971) <doi:10.1093/biomet/58.3.453> and Gower & Harding (1988) <doi:10.1093/biomet/75.3.445> for original proposals. Because they treat the abscissa and ordinate as commensurate or the data elements themselves as point masses or unit vectors, these multivariable tools can be thought of as belonging to geometric data analysis; see Podani (2000, ISBN:90-5782-067-6) for techniques and applications and Le Roux & Rouanet (2005) <doi:10.1007/1-4020-2236-0> for foundations. 'gggda' extends Wickham's (2010) <doi:10.1198/jcgs.2009.07098> layered grammar of graphics with statistical transformation ("stat") and geometric construction ("geom") layers for many of these tools, as well as convenience coordinate systems to emphasize intrinsic geometry of the data.
Version: 0.1.1 Depends: R (≥ 3.3.0), ggplot2 Imports: rlang, tidyr, dplyr, magrittr, scales, labeling, ddalpha Suggests: gridExtra, MASS, Hmisc, tibble, mlpack, testthat, knitr, rmarkdown Published: 2025-07-19 DOI: 10.32614/CRAN.package.gggda Author: Jason Cory Brunson [aut, cre], Emily Paul [ctb], John Gracey [aut] Maintainer: Jason Cory Brunson <cornelioid at gmail.com> BugReports: https://github.com/corybrunson/gggda/issues License: GPL-3 URL: https://github.com/corybrunson/gggda, https://corybrunson.github.io/gggda/ NeedsCompilation: no Materials: README, NEWS CRAN checks: gggda results Documentation: Downloads: Reverse dependencies: Linking:Please use the canonical form https://CRAN.R-project.org/package=gggda to link to this page.
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