Azzera filtri
Azzera filtri

How to Multiply a number to a row of matrix

29 visualizzazioni (ultimi 30 giorni)
For example i have matrix
A = [ 1 2 3 ; 3 4 5]
I want to multiply 2 to the 2nd row of the matrix so i got
A = [ 1 2 3 ; 6 8 10]

Risposta accettata

Star Strider
Star Strider il 23 Dic 2017
Use bsxfun to multiply the first row by 1 (so it remains the same), and the second row by 2:
A = [ 1 2 3 ; 3 4 5];
A = bsxfun(@times, A, [1; 2])
A =
1 2 3
6 8 10

Più risposte (1)

David Wilson
David Wilson il 26 Dic 2017
or if you have a recent version of Matlab, then one can avoid the cryptic bxfun with
>> A.*[1;2]

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by