On Sun, Mar 19, 2023 at 11:17 AM Dhanasekaran Kuppusamy
<drgkdphd@gmail.com> wrote:
>
> Dear gretl experts ,
> I would like to know how to multiply the corresponding elements of two matrices of A and B to generate matrix C as shown below and the square values of the elements in matrix C using gretl. For example,
> 1)
> matrix A (3x3): matrix B (3x3): matrix C (3x3):
> 4 2 3 1 1 2 4 2 6
> 2 -3 2 1 0 1 2 0 2
> - 3 1 2 1 2 2 - 3 2 4
C = A .* B
"dot-multiply" works element by element (Hadamard multiplication).
> 2) How to generate square values of the elements in matrix C to get matrix D :
>
> For example, matrix C (3x3): matrix D (3x3):
> 4 2 6 16 4 36
> 2 0 2 4 0 4
> -3 2 4 9 4 16
D = C .^ 2
"dot-raise to power" also works element-wise.
Allin Cottrell
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