Reorder Boxplot in Base R & ggplot2 (2 Examples) | Change Ordering | Reorder Factor Levels of Data

R code of this video:

values = rnorm(100))

boxplot(data$values ~ data$group) # Default boxplot in Base R

data_new ＜- data # Duplicate data
data_new$group ＜- factor(data_new$group, # Reorder factor levels
c("C", "B", "D", "A"))

boxplot(data_new$values ~ data_new$group) # Reordered boxplot in Base R

library("ggplot2")

ggplot(data_new, aes(group, values)) + # Reordered boxplot in ggplot2
geom_boxplot()

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[kydaviddoyle]

Dang you came to my rescue twice within 24 hr! Thanks for the great videos!!

[franciscobarillas]

Very well explained and useful. Great pace.

[emmettetaylor]

Quick, easy and excellent explanation. Thank you

[agsoutas]

I like the new layout, Joachim, I find it mich more personal.

[pertinaciousD]

Why is it that when I try to reorder my factors R converts all of them to NA's?

[nicolabiondi]

Thanks for the tutorial! Very helpful!

[dmewgge]

Nice video, but how to I order e. g. the box plots according to their median, when I have for example only headers with plant species (which are shown on the x asis, like the data A, B, C, ... in your video) and measurements per plot for the y axis, I cant figure out how to do it when there is more than two colums and too much data to write the collum names so I would determine their order manually

[eshitab]

Hi! Thanks for making it easy for us to learn R. I have a doubt. If I have directly imported my data set, how can I then change the order of the boxplots? Thanks

[matosleni]

Thanks for the tutorial!
If we had more levels per factor ("letters" in the x axis), such as "A-left, B-left, A-right, B-right" and so on, how could we reorder them all? In this example, they should be shown as "A-left, A-right, B-left, B-right" etc. My dataset was designed for a ANOVA two-way. Is it possible to do that with base R, not ggplot ? Thank you!