
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Create Barplot with One Bar Having Different Color in R
A bar plot represents discrete data and the bars in the bar plot are usually of same color but we might want to highlight a particular bar based on the characteristics of the data or the objective of the analysis project. For example, if a particular bar represents highly severe situation or highly unimportant situation then we can change the color that particular bar so that people can easily point out that bar.
Consider the below data frame −
Example
x<-c("X1","X2","X3","X4") freq<-c(56,53,55,57) df<-data.frame(x,freq) df
Output
x freq 1 X1 56 2 X2 53 3 X3 55 4 X4 57
Loading ggplot2 package and creating bar plot with green color for bar showing 57 −
Example
library(ggplot2) ggplot(df,aes(x,freq,fill=x))+geom_bar(stat="identity")+ scale_fill_manual(values=c("blue","blue","blue","green"))
Output
Creating bar plot with blue color for bar showing 57 −
Example
ggplot(df,aes(x,freq,fill=x))+geom_bar(stat="identity")+ scale_fill_manual(values=c("red","red","red","blue"))
Output
Advertisements