How to change the order of x-axis in multiple boxplots in R

Question

I am trying to change the order x-axis in this boxplot.

[Now the order is loupe, microscope and video, and I want to change it to microscope, loupe then video]

T

Answer 1

You will need to redefine the order of the factors with the factor function.

#Sample data
Label<-c("Microscope", "Microscope", "Loupe", "Loupe", "Video", "Video")
mydata<-data.frame(Label)

#print out
levels(mydata$Label)

mydata$Label<-factor(mydata$Label, levels=c("Microscope", "Loupe",  "Video"))
#print out
levels(mydata$Label)

See the cookbook-r.com for more information: http://www.cookbook-r.com/Manipulating_data/Changing_the_order_of_levels_of_a_factor/