Itqualityassurance
How to extract elements from a matrix in R?
Similar to vectors, you can use the square brackets [ ] to select one or multiple elements from a matrix. Whereas vectors have one dimension, matrices have two dimensions. You should therefore use a comma to separate the rows you want to select from the columns.
How do you enter data into a matrix in R?
To enter an n dimension identity matrix in R we use diag (n) function. I-diag(3), this will enter a 3×3 matrix of dimension 3. Operations in Matrices: To add and subtract the matrices with same number of rows and columns.
