Label with mathematical expressions
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.
label_bquote(rows = NULL, cols = NULL, default = label_value)
- Backquoted labelling expression for rows.
- Backquoted labelling expression for columns.
- Default labeller function for the rows or the columns when no plotmath expression is provided.
# 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)))
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