R matrix multiplication element wise
- how to do matrix multiplication in r
- how to speed up matrix multiplication in r
- how to multiply matrices step by step
- how to multiply a matrix by a matrix
In r...
Matrix inverse in r
Matrix Multiplication in R
Matrix multiplication is the most useful matrix operation. It is widely used in areas such as network theory, transformation of coordinates and many more uses nowadays. A matrix in R can be created using matrix() function and this function takes input vector, nrow, ncol, byrow, dimnames as arguments.
Creating a matrix
A matrix can be created using matrix() function.
[GFGTABS]
R
# R program to create a matrixm<-matrix(1:8,nrow=2)print(m)
[/GFGTABS]
Output:
[,1] [,2] [,3] [,4][1,] 1 3 5 7
[2,] 2 4 6 8
Multiplication of Matrices
The multiplication operator * is used for multiplying a matrix by scalar or element-wise multiplication of two matrices.
Multiplication with scalar
If you multiply a matrix with a scalar value, then every element of the matrix will be multiplied with that scalar.
[GFGTABS]
R
# R program for matrix multiplication# with a scalarm<-matrix(1:8,nrow=2)m<-2*mprint(m)
[/GFGTABS]
Output:
[,1] [,2] [,3] [,4][1,] 2 6 10 14
[2,] 4 8 12 16
In the above code, the scala
- how to multiply a matrix by a number
- how to multiply a matrix by itself