factoextra (version 1.0.3)

fviz_add: Add supplementary data to a plot

Description

Add supplementary data to a plot

Usage

fviz_add(ggp, df, axes = c(1, 2), geom = c("point", "arrow"), color = "blue", addlabel = TRUE, labelsize = 4, pointsize = 2, shape = 19, linetype = "dashed", jitter = list(what = "label", width = NULL, height = NULL))

Arguments

ggp

a ggplot2 plot.

df

a data frame containing the x and y coordinates

axes

a numeric vector of length 2 specifying the components to be plotted.

geom

a character specifying the geometry to be used for the graph Allowed values are "point" or "arrow" or "text"

color

the color to be used

addlabel

a logical value. If TRUE, labels are added

labelsize

the size of labels. Default value is 4

pointsize

the size of points

shape

point shape when geom ="point"

linetype

the linetype to be used when geom ="arrow"

jitter

a parameter used to jitter the points in order to reduce overplotting. It's a list containing the objects what, width and height (i.e jitter = list(what, width, height)).

• what: the element to be jittered. Possible values are "point" or "p"; "label" or "l"; "both" or "b".
• width: degree of jitter in x direction
• height: degree of jitter in y direction

Value

a ggplot2 plot

References

http://www.sthda.com

Examples

# Principal component analysis
data(decathlon2)
decathlon2.active <- decathlon2[1:23, 1:10]
res.pca <- prcomp(decathlon2.active,  scale = TRUE)

# Visualize variables
p <- fviz_pca_var(res.pca)
print(p)

# Add supplementary variables
coord <- data.frame(PC1 = c(-0.7, 0.9), PC2 = c(0.25, -0.07))
rownames(coord) <- c("Rank", "Points")
print(coord)
fviz_add(p, coord, color ="blue", geom="arrow")