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bquote
label_bquote(expr = beta^.(x))
plotmath
Other facet labellers: label_both; label_parsed; label_value
label_both
label_parsed
label_value
p <- qplot(wt, mpg, data = mtcars) p + facet_grid(. ~ vs, labeller = label_bquote(alpha ^ .(x))) p + facet_grid(. ~ vs, labeller = label_bquote(.(x) ^ .(x)))
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