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How to increase the X-axis labels font size using ggplot2 in R?
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. This might be required when we want viewers to critically examine the X-axis labels and especially in situations when we change the scale for X-axis.
Check out the below given example to understand how it can be done.
Example
Following snippet creates a sample data frame −
x<-rnorm(20) y<-rnorm(20) df<-data.frame(x,y) df
The following dataframe is created −
x y 1 -0.98190157 1.080447960 2 1.00247425 1.268177956 3 1.93521281 1.396761171 4 -0.05125250 1.116289059 5 -0.96090929 -0.710364525 6 -1.24432105 -0.146794806 7 -2.36365700 0.900933342 8 -0.04993840 -0.654018782 9 1.00789255 0.528862194 10 -0.87029207 0.515485209 11 -1.96332523 -2.288145618 12 -0.61780404 0.113034383 13 -0.73750813 0.716358061 14 -0.67379795 -0.002136233 15 0.04409529 1.353033640 16 2.35756367 0.361340419 17 1.33416796 0.331124217 18 -0.71829594 -1.067921280 19 0.38769673 -0.435514111 20 0.27477924 1.996037117
To load ggplot2 package and create point chart between x and y, add the following code to the above snippet −
library(ggplot2) ggplot(df,aes(x,y))+geom_point()
Output
If you execute all the above given snippets as a single program, it generates the following output −
To create point chart between x and y with X-axis labels of larger size, add the following code to the above snippet −
ggplot(df,aes(x,y))+geom_point()+theme(axis.text.x=element_text(size=15))
Output
If you execute all the above given snippets as a single program, it generates the following output −
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