How to add a column to a matrix in R

Overview

To understand and create a matrix in R, read this shot.

Adding a column to a matrix

The cbind() function adds additional columns to a matrix in R.

Syntax

cbind(matrix, c(column elements))

Parameter value

The cbind() function takes two parameter values:

1. matrix: This is the existing matrix to which we will add a column.
2. column elements: This is the list of elements we wish to add to the new column.

Return value

The cbind() function returns a modified matrix with a new column.

Code

Code explanation

• Line 2: We create a 3 by 3 matrix (a matrix with 3 rows and 3 columns) myMatrix using the matrix() function. We then passing the parameter values of its shape. nrow = 3 represents 3 rows, and ncol = 3 represents 3 columns.
• Line 5: We use the cbind() function to add a new column of elements to the existing matrix.
• Line 7: We print myNewMatrix.

It is worth noting that the new column must be the same length as the current matrix.