Matrix Transpose and Left Multiplication

kevinsunParticipant 2010-05-24 at 3:23 am

1. How can I do a Matrix Transpose? B=A’ 2. How can I do a Matrix Left Multiplication? B=v * A

Thanks.
Haksun LiModerator 2010-05-25 at 4:02 pm
To do transpose, you can do
```
 
Matrix B = A.t(); 
```
Is B a matrix or a vector?

If B is a matrix, you can cast vector v into a matrix and then do the matrix multiplication. That is,
```
 
Matrix B = (new Matrix(v)).t().times(A); 
```
If B is a vector, you can do
```
 
Vector B = new Vector((new Matrix(v)).t().times(A)); 
```