How to use fill argument within the aes function In R Language

Method 2: Using scale_fill_manual function

Using the fill argument within the aes function to be equal to the grouping variable of the given data. Aesthetic mappings describe how variables in the data are mapped to visual properties (aesthetics) of geoms. Aesthetic mappings can be set in ggplot() and in individual layers

Syntax:

aes(x, y, ...)

Parameters:

x, y, … : List of name-value pairs in the form aesthetic = variable describing which variables in the layer data should be mapped to which aesthetics used by the paired geom/stat.

Example:

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

R

# load the library 
library("ggplot2") 
  
# create the 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 the bar 
ggplot(gfg, aes(x, y, fill=x)) + geom_bar(stat="identity") 