How can I format axis labels with exponents with ggplot2 and scales?

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I adapted Brian’s answer and I think I got what you’re after.

Simply by adding a parse() to the scientific_10() function (and changing ‘x’ to the correct ‘times’ symbol), you end up with this:

x <- 1:4
y <- c(0, 0.0001, 0.0002, 0.0003)

dd <- data.frame(x, y)

scientific_10 <- function(x) {
  parse(text=gsub("e", " %*% 10^", scales::scientific_format()(x)))
}

ggplot(dd, aes(x, y)) + geom_point()+scale_y_continuous(label=scientific_10)

enter image description here

You might still want to smarten up the function so it deals with 0 a little more elegantly, but I think that’s it!

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