Manipulating strip text in a single facet title (among many)

[trichter]

Hi!

A more general question. I have a facet wrap of 25 factors. One of them is a biological species name, and i am supposed to have that in italics.

Is it possible to manipulate only ONE facet title?

Cheers!

Tim

[Brian]

Yes!

as an expression:

change the level (factor name) from 'species' to 'italic(species)'

Best
Brian

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[Roman Luštrik]

If you are able to use facet_grid, you can easily adjust levels and use a labeller to convert the "?plotmath" to human readable expression.

library(ggplot2)

levels(iris$Species)[levels(iris$Species) %in% "setosa"] <- "italic('Iris setosa')"

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width)) +

  theme_bw() +

  geom_point() +

  facet_grid(~ Species, labeller = label_parsed)

Cheers,

Roman

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