fviz_ellipses: Draw confidence ellipses around the categories

In YTLogos/factoextra: Extract and Visualize the Results of Multivariate Data Analyses

Description

Draw confidence ellipses around the categories

Usage

fviz_ellipses(X, habillage, axes = c(1, 2), addEllipses = TRUE,
  ellipse.type = "confidence", palette = NULL, pointsize = 1,
  geom = c("point", "text"), ggtheme = theme_bw(), ...)

Arguments

X	an object of class MCA, PCA or MFA.
habillage	a numeric vector of indexes of variables or a character vector of names of variables. Can be also a data frame containing grouping variables.
axes	a numeric vector specifying the axes of interest. Default values are 1:2 for axes 1 and 2.
addEllipses	logical value. If TRUE, draws ellipses around the individuals when habillage != "none".
ellipse.type	Character specifying frame type. Possible values are "convex", "confidence" or types supported by stat_ellipse() including one of c("t", "norm", "euclid") for plotting concentration ellipses. "convex": plot convex hull of a set o points. "confidence": plot confidence ellipses arround group mean points as coord.ellipse()[in FactoMineR]. "t": assumes a multivariate t-distribution. "norm": assumes a multivariate normal distribution. "euclid": draws a circle with the radius equal to level, representing the euclidean distance from the center. This ellipse probably won't appear circular unless coord_fixed() is applied.
palette	the color palette to be used for coloring or filling by groups. Allowed values include "grey" for grey color palettes; brewer palettes e.g. "RdBu", "Blues", ...; or custom color palette e.g. c("blue", "red"); and scientific journal palettes from ggsci R package, e.g.: "npg", "aaas", "lancet", "jco", "ucscgb", "uchicago", "simpsons" and "rickandmorty". Can be also a numeric vector of length(groups); in this case a basic color palette is created using the function palette.
pointsize	the size of points
geom	a text specifying the geometry to be used for the graph. Allowed values are the combination of c("point", "text"). Use "point" (to show only points); "text" to show only labels; c("point", "text") to show both types.
ggtheme	function, ggplot2 theme name. Default value is theme_pubr(). Allowed values include ggplot2 official themes: theme_gray(), theme_bw(), theme_minimal(), theme_classic(), theme_void(), ....
...	Arguments to be passed to the functions ggpubr::ggscatter() & ggpubr::ggpar().

Value

a ggplot

Author(s)

Alboukadel Kassambara [e-mail]

Examples

# Multiple Correspondence Analysis
# +++++++++++++++++++++++++++++++++
library(FactoMineR)
data(poison)
res.mca <- MCA(poison, quanti.sup = 1:2, 
              quali.sup = 3:4, graph=FALSE)
              
fviz_ellipses(res.mca, 1:4, geom = "point",
palette = "jco") 

 

YTLogos/factoextra documentation built on May 3, 2019, 9:03 p.m.