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I want to add the following axis label to a plot: Ba:Ca (µmol mol -1) At the moment I have managed to get the -1 into a superscript, which is what I am after, but I am not able to get the space in after mol and before the -1. Do I need to add something to the script below as it just prints it as mol-1?

ggplot(aes(Distance3, newBa)) + labs(y= expression (paste('Ba:Ca (µmol mol'^ -1,')'))
zx8754
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Angela Russell
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1 Answers1

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We can get a space with ~:

library(ggplot2)

ggplot(mtcars, aes(mpg, wt)) + 
  geom_point() +
  labs(y = expression(paste('Ba:Ca (µmol mol'^~-1,')')))

# or without paste:
ggplot(mtcars, aes(mpg, wt)) + 
  geom_point() +
  labs(y = expression(Ba:Ca~(mu*mol~mol^~-1)))

enter image description here

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Stéphane Laurent
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