Syntax error How to create stacked barplot using barplot function with each bar having unique color in R?

How to create stacked barplot using barplot function with each bar having unique color in R?

In a bar plot, each bar represents one category of a single categorical variable but in a stacked bar plot, the bars represent same categorical variable but each divided into sub-categories. If we want to have similar distribution of colors in each bar then col argument with barplot function can be used.

Example1

 Live Demo

M1<−matrix(sample(c(1:5),20,replace=TRUE),ncol=4)
M1

Output

   [,1] [,2] [,3] [,4]
[1,] 4    3    5    3
[2,] 4    2    1    4
[3,] 5    5    2    3
[4,] 3    2    2    4
[5,] 1    5    2    5

Example

barplot(M1,col=rep(c("white","green","red","blue","yellow"),5))

Output

Example2

 Live Demo

M2<−matrix(sample(c(26:30),20,replace=TRUE),ncol=4)
M2
[,1] [,2] [,3] [,4]
[1,] 28 27 27 29
[2,] 30 28 28 27
[3,] 28 28 30 29
[4,] 30 28 28 28
[5,] 26 28 29 30

Example

barplot(M2,col=rep(c("white","green","red","blue","yellow"),5))

Output

Example

M3<−matrix(rpois(20,5),ncol=4)
M3

Output

[,1] [,2] [,3] [,4]
[1,] 6 8 4 5
[2,] 8 3 7 2
[3,] 5 4 4 2
[4,] 5 3 5 2
[5,] 6 5 2 3

Example

barplot(M3,col=rep(c("white","green","red","blue","yellow"),5))

Output

Updated on: 2020-11-07T11:38:35+05:30

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