How to use scale_fill_manual function In R Language

Method 1: Using fill argument within the aes function

scale_fill_manual() allows you to specify your own set of mappings from levels in the data to aesthetic values.

Syntax:

scale_fill_manual(..., values)

Parameters:

…: Common discrete scale parameters: name, breaks, labels, na.value, limits, and guide.

Example:

We will be using 6 different data points for the bar plot and then with the help of using the scale_fill_manual function, we will be applying the given colors to the barplot in the R programming language.

Input:

R

# load the package 
library("ggplot2") 
  
# create a dataframe 
# with letters and numbers 
gfg < -data.frame( 
    x=c('A', 'B', 'C', 'D', 'E', 'F'), 
    y=c(4, 6, 2, 9, 7, 3)) 
  
# display bar 
ggplot(gfg, aes(x, y, fill=x)) + 
geom_bar(stat="identity") + 
scale_fill_manual(values=c("A"="purple", 
                           "B"="yellow", 
                           "C"="red", 
                           "D"="blue", 
                           "E"="green", 
                           "F"="black")) 