CODEWITHSUNDEEP
rggplot2
aqkhan
aqkhan

Reputation: 86

How do order a ggplot barplot with ONE variable?

How do I reorder the bars if I am using just one variable?

cbp2 <- c("#44bcd8", "#b97455", "#042f66", "#1c100b",
      "#ff3300", "#006600", "#660033", "#660066","#ffcc00","#99ff99","#669999")
ggplot(data = diamonds)+
geom_bar(mapping = aes(color, fill=cut))+ 
theme(aspect.ratio = 1) +
scale_fill_manual(values = cbp2)+ 
labs(x = NULL, y = NULL)+ 
coord_flip()

I get this: Bar plot

To reoder, I tried to use geom_bar(mapping = aes(x=reorder(color, fill=cut))

but it doesn't work. Tried to look on the web but all examples include both x and y in aes(). Any suggestions?

Upvotes: 1

Views: 734

Answers (2)

Brent
Brent

Reputation: 465

Not quite sure what order you wish to re-order x to, but fct_reorder (from forcats library) accepts a range of helpful functions.

Key point: wrap only the mapped variable you wish to reorder in fct_reorder - in your example above you have included fill in the reorder call.

If you wish to reorder by the count of each colour:

library(ggplot2)
library(forcats)

ggplot(data = diamonds)+
  geom_bar(mapping = aes(fct_reorder(color, cut, .fun = 'length'), fill=cut))+ 
  theme(aspect.ratio = 1) +
  scale_fill_manual(values = cbp2)+ 
  labs(x = NULL, y = NULL)+ 
  coord_flip()

enter image description here

More examples here: https://www.r-graph-gallery.com/267-reorder-a-variable-in-ggplot2.html

Upvotes: 2

Daniel_j_iii
Daniel_j_iii

Reputation: 3252

Used the library forcats and the function fct_rec()

library(forcats)
library(ggplot2)
cbp2 <- c("#44bcd8", "#b97455", "#042f66", "#1c100b",
      "#ff3300", "#006600", "#660033", "#660066","#ffcc00","#99ff99","#669999")

ggplot(data = diamonds)+
geom_bar(mapping = aes(fct_rev(color), fill=cut))+ 
theme(aspect.ratio = 1) +
scale_fill_manual(values = cbp2)+ 
labs(x = NULL, y = NULL) +
coord_flip()

enter image description here

Upvotes: 0

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