How to deal with Error: stat_count() can only have an x or y aesthetic in R?
To deal with Error: stat_count() can only have an x or y aesthetic, we need to pass the stat="identity" argument inside geom_bar function. Since we do not pass the count for bars and a bar graph can only contain only count variable, hence stat="identity" is needed so that geom_bar considers only one variable in aes for counting. Check out the below example to understand the difference.
Example
Consider the below data frame −
Live Demo
factor<-sample(0:2,20,replace=TRUE)
col<-sample(6:8,20,replace=TRUE)
count<-rpois(20,8)
df<-data.frame(factor,col,count)
df
Output
factor col count
1 2 7 7
2 0 8 8
3 0 6 9
4 0 7 8
5 1 7 10
6 0 6 12
7 2 6 10
8 1 6 8
9 0 6 9
10 0 7 8
11 0 8 3
12 2 8 11
13 1 7 14
14 0 7 10
15 1 8 13
16 0 8 5
17 2 8 10
18 2 7 8
19 1 6 9
20 2 8 9
Loading ggplot2 package and creating bar chart for categories in factor column −
library(ggplot2)
ggplot(df,aes(factor,count,fill=col))+geom_bar()
Error − stat_count() can only have an x or y aesthetic.
Run `rlang::last_error()` to see where the error occurred.
Creating the bar chart with stat="identity" −
Example
ggplot(df,aes(factor,count,fill=col))+geom_bar(stat="identity")
Output
Published on 06-Mar-2021 16:17:18
