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How to change the tick size using ggplot2 in R?
To change the tick size using ggplot2, we can use theme function with argument axis.ticks.length. For example, if we have a data frame called df that contains two columns say x and y then the scatterplot between x and y with larger size of tick marks can be created by using the below command −
ggplot(df,aes(x,y))+geom_point()+theme(axis.ticks.length=unit(0.8,"inch"))
Example
Consider the below data frame −
x<-rnorm(20) y<-rnorm(20) df<-data.frame(x,y) df
Output
x y 1 2.5494830 -0.587904992 2 -0.5864972 0.006669457 3 0.9554755 -3.925291145 4 0.6686948 -2.326550523 5 -0.3267310 0.738981444 6 -0.8751193 -0.438232843 7 0.5477108 0.214512133 8 -0.4767738 0.451001999 9 -0.5364709 0.335897135 10 0.5853087 -0.665692002 11 -1.7818255 0.944527193 12 -0.9670748 0.639372414 13 0.4873353 0.466036727 14 0.3669196 2.732934553 15 0.9450203 -0.201909686 16 -1.1646289 -0.533447384 17 -1.8637459 1.186856615 18 -1.5751590 -1.154048208 19 -0.2266776 1.813758654 20 -0.7125976 0.251823020
Loading ggplot2 package and creating scatterplot between x and y with default size of tick marks −
Example
library(ggplot2) ggplot(df,aes(x,y))+geom_point()
Output
Creating scatterplot between x and y with larger size of tick marks −
Example
ggplot(df,aes(x,y))+geom_point()+theme(axis.ticks.length=unit(0.2,"inch"))
Output
Example
ggplot(df,aes(x,y))+geom_point()+theme(axis.ticks.length=unit(0.50,"cm"))
Output
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