ggplot – reorder_within – Order month

June 3, 2023

I am plotting a bar graph in RSTUDIO. However, the axes x show in different month order. Using the command reoder_within, doesn’t work for the purpose.

Follow below the ME.

ggplot(de, aes(fill=Cidade, y = Leitura  , x = Mes ))+geom_bar(position='dodge', stat='identity')

Generate the follow plot:

Plot

My purpose is modify the axes x to: Jan, Fev, March …..

The set of data is:

  Cidade    Mes       Leitura
  <chr>     <chr>       <dbl>
1 Petrolina Janeiro     74.2 
2 Petrolina Fevereiro   73.2 
3 Petrolina Março       68.7 
4 Petrolina Abril       42.9 
5 Petrolina Maio         9.84
6 Petrolina Junho        8.02

Thank you for help

Yours Faithfully

>Solution :

We can use fct_inorder here:

ggplot will order x axis alphapetically. To get the order in your table use fct_inorder:

library(ggplot2)
library(forcats)
library(dplyr)

de %>% 
  mutate(Mes = fct_inorder(Mes)) %>% 
  ggplot(aes(fill = Cidade, y = Leitura, x = Mes)) +
  geom_bar(position = 'dodge', stat = 'identity')