Change or modify x axis tick labels in R using ggplot2 [duplicate]

Question

How can I change the names of my x axis labels in ggplot2? See below:

ggbox <- ggplot(buffer, aes(SampledLUL, SOC)) + geom_boxplot() ggbox <- ggbox + theme(axis.text.x=element_text(color = "black", size=11, angle=30, vjust=.8, hjust=0.8)) ggbox<- ggbox + labs(title = "Land cover Classes") + ylab("SOC (g C/m2/yr)") + xlab("Land cover classes")

The above code creates the following figure: enter image description here

I would like to be able to capitilize the first letter of these classes (i.e Crop, as opposed to crop).

I've tried the code below but not sure where to put it and exactly what function to use. labels = c("Citrus", "Crop", "Cypress Swamp", ..........)

(I'm using windows 7, Rstudio)

note that str_to_sentence can be used to produce the desired capitalization scheme. stringr.tidyverse.org/reference/case.html — flies
– flies, Commented Jan 2, 2020 at 20:49

user1317221_G · Accepted Answer · 2013-12-11 20:31:58Z

96

create labels:

 SoilSciGuylabs <- c("Citrus", "Crop", "Cypress Swamp")

then add:

+ scale_x_discrete(labels= SoilSciGuylabs)

answered Dec 11, 2013 at 20:31

user1317221_G

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2 Comments

Alison Bennett Over a year ago

I used this to mask a continuous variable as a categorical so I could use geom_line. To make the labels appear I needed to set breaks first. I used scale_x_continuous(breaks=seq(1,12,1),labels=my_labels). Just noting that here in case it helps someone else.

James Campbell Sep 17 at 23:01

@Alison Bennett - thanks. I needed the same thing (categorial labels on a numeric x-axis so geom_line() would work). Your extra comment helped

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