Adding exponent to axes labels (R / ggplot2)

Question

I've looked at a number of the solutions to the same question but applied to different datasets, and none seem to work for me.

I'm looking to add metres cubed as the unit for each axis title, with metres cubed obviously showing with an exponent. The latest code I tried (which didn't work) was as follows:

ggplot(data=vol30, aes(x=control, y=vol30)) + geom_point(alpha=.6, size=4, color="#880011") + ggtitle("Ground Survey vs. 30m UAV Survey") + labs(x="Volume, m^{3}", y="Volume, m^{3}") + xlim(0, 5) + ylim(0, 5) + geom_abline(intercept = 0, slope = 1, alpha=.6, size = 1, colour="blue")

I'm new to R and ggplot2, so speak slowly ;) Does anyone have any recommendations?

Possible duplicate of [how to write micrometer squared per cubic meter in plot label in R](http://stackoverflow.com/questions/9269607/how-to-write-micrometer-squared-per-cubic-meter-in-plot-label-in-r) — Mateusz1981, Oct 15 '15 at 13:20

Mateusz1981 · Accepted Answer · 2015-10-15T13:27:00.547

9

expressionshould be added to labs(x =

 x = expression(paste("Volume ", m^{3})), y = expression(paste("Volume ", m^{3}))

edited Oct 15 '15 at 13:27

answered Oct 15 '15 at 13:21

Mateusz1981

1,817
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score 1 · Answer 2 · answered Oct 15 '15 at 13:26

1

you can use parse

labs(x=parse(text='Volume, m^3'), y=parse(text='Volume, m^3'))

answered Oct 15 '15 at 13:26

cccmir

953
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Adding exponent to axes labels (R / ggplot2)

2 Answers2