Description Usage Arguments Value Author(s) References Examples
Add supplementary data to a plot
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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" |
repel |
a boolean, whether to use ggrepel to avoid overplotting text labels or not. |
font.family |
character vector specifying font family. |
... |
Additional arguments, not used |
a ggplot2 plot
Alboukadel Kassambara alboukadel.kassambara@gmail.com
http://www.sthda.com
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # 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")
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