ggplot2 facet_wrap中带有expression()的As_labeller [英] As_labeller with expression() in ggplot2 facet_wrap
本文介绍了ggplot2 facet_wrap中带有expression()的As_labeller的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在
library(ggplot2)
library(reshape)
df <- as.data.frame(matrix(runif(9),3,3))
df$factor <- letters[1:3]
df.m <- melt(df)
ggplot(df.m, aes(variable, value)) +
geom_boxplot() +
facet_wrap(~factor)
我想更改构面名称.根据ggplot2教程,此方法有效:
i want to change the facet names. According to the ggplot2 tutorials, this is working:
new.lab <- as_labeller(c(a="A",b="B",c="C"))
ggplot(df.m, aes(variable, value)) +
geom_boxplot() +
facet_wrap(~factor, labeller=new.lab)
但是,这不是:
new.lab <- as_labeller(c(a="A",b="B",c=expression(italic("C"))))
ggplot(df.m, aes(variable, value)) +
geom_boxplot() +
facet_wrap(~factor, labeller=new.lab)
如何在ggplot2 2.0方面获得斜体字(或任何其他特殊符号)?
How can i get italics (or any other special symbol) in ggplot2 2.0 facets?
推荐答案
而label_parsed
呢?
df.m$f2 <- factor(df.m$factor, labels = c("AAA", "bold(BBB)", "italic(CCC)"))
ggplot(df.m, aes(variable, value)) +
geom_boxplot() +
facet_wrap(~f2, labeller = label_parsed) +
theme(text = element_text(size = 20))
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