label_bquote: Label with mathematical expressions

In SahaRahul/ggplot2: Create Elegant Data Visualisations Using the Grammar of Graphics

Description

label_bquote() offers a flexible way of labelling facet rows or columns with plotmath expressions. Backquoted variables will be replaced with their value in the facet.

Usage

label_bquote(rows = NULL, cols = NULL, default = label_value)

Arguments

rows	Backquoted labelling expression for rows.
cols	Backquoted labelling expression for columns.
default	Default labeller function for the rows or the columns when no plotmath expression is provided.

See Also

labellers, labeller(),

Examples

# The variables mentioned in the plotmath expression must be
# backquoted and referred to by their names.
p <- ggplot(mtcars, aes(wt, mpg)) + geom_point()
p + facet_grid(vs ~ ., labeller = label_bquote(alpha ^ .(vs)))
p + facet_grid(. ~ vs, labeller = label_bquote(cols = .(vs) ^ .(vs)))
p + facet_grid(. ~ vs + am, labeller = label_bquote(cols = .(am) ^ .(vs)))

SahaRahul/ggplot2 documentation built on May 17, 2019, 1:46 p.m.