heplot.candiscList function

Canonical Discriminant HE plots

These functions plot ellipses (or ellipsoids in 3D) in canonical discriminant space representing the hypothesis and error sums-of-squares-and-products matrices for terms in a multivariate linear model. They provide a low-rank 2D (or 3D) view of the effects for that term in the space of maximum discrimination.

## S3 method for class 'candiscList'
heplot(mod, term, ask = interactive(), graphics = TRUE, ...)

Arguments

• mod: A candiscList object for terms in a mlm
• term: The name of one term to be plotted for the heplot and heplot3d methods. If not specified, one plot is produced for each term in the mlm object.
• ask: If TRUE (the default), a menu of terms is presented; if ask is FALSE, canonical HE plots for all terms are produced.
• graphics: if TRUE (the default, when running interactively), then the menu of terms to plot is presented in a dialog box rather than as a text menu.
• ...: Arguments to be passed down

Returns

No useful value; used for the side-effect of producing canonical HE plots.

References

Friendly, M. (2006). Data Ellipses, HE Plots and Reduced-Rank Displays for Multivariate Linear Models: SAS Software and Examples Journal of Statistical Software, 17(6), 1-42. https://www.jstatsoft.org/v17/i06/

tools:::Rd_expr_doi("10.18637/jss.v017.i06") .

Friendly, M. (2007). HE plots for Multivariate General Linear Models. Journal of Computational and Graphical Statistics, 16 (2) 421--444. http://datavis.ca/papers/jcgs-heplots.pdf, tools:::Rd_expr_doi("10.1198/106186007X208407") .

See Also

candisc, candiscList, heplot, heplot3d

Author(s)

Michael Friendly and John Fox