r - How to include a \perp symbol in a ggplot2 annotation? -


i put annotation : e \perp c using ggplot2 annotate("text", label = ...).

i searched quite thorougly on web managed lone symbol using annotate("text", label = "symbol('\136')", parse = t).

does have solution ?

plotting code page:

 p <- ggplot(df, aes(x = gp, y = y)) +     geom_point() +     geom_point(data = ds, aes(y = mean),                colour = 'red', size = 3)  p+geom_text( aes(x="b", y=-0.4, label = "e(y)*symbol('\\136')*b" ),    parse = true)

after getting work able annotate(text"...) working:

p+annotate("text",  1, -0.4, label="e(y)*symbol('\\136')*b", parse=true)

the tricks: mix quoting characters did use plotmath syntax i'm guessing might not have used.

edit: * not quoting character. if anything, should called linking character. in plotmath syntax every "atom" or function call needs separated (or "linked-to" depending on how view it) adjoining atoms/functions. can * (the no-space separator/linker), ~ (the spacing separator/linker), or of dyadic operators in plotmath vocabulary, examples including + , -, ==, !=.


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