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I have a ggplot and I want to highlight only some specific x-axis labels according to a predefined condition.
I know that axis text is controlled by
theme(axis.text = element_text(...))
but this applies to all labels of the axis. What I want is that the formatting change be applied only the labels that have condition = 1.
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Key ggplot2 R functions p + xlab(“New X axis label”): Change the X axis label. p + ylab(“New Y axis label”): Change the Y axis label. p + labs(x = “New X axis label”, y = “New Y axis label”): Change both x and y axis labels.
To increase the X-axis labels font size using ggplot2, we can use axis. text. x argument of theme function where we can define the text size for axis element.
You can include for example ifelse() function inside element_text() to have different labels.
ggplot(iris,aes(Species,Petal.Length))+geom_boxplot()+
theme(axis.text.x=
element_text(face=ifelse(levels(iris$Species)=="setosa","bold","italic")))
Or you can provide vector of values inside element_text() the same length as number of levels.
ggplot(iris,aes(Species,Petal.Length))+geom_boxplot()+
theme(axis.text.x = element_text(face=c("bold","italic","bold"),
size=c(11,12,13)))
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