Matlab row subtraction of matrix
30 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Virendra Kowale
le 30 Jan 2021
Commenté : Paul Hoffrichter
le 30 Jan 2021
Matlab subtractions of rows of matrix(eg:- row2-row1) and then how to rewrite the resulatant entire matrix where 2nd row = row2 - row1
0 commentaires
Réponse acceptée
Paul Hoffrichter
le 30 Jan 2021
On the other hand, maybe you want to subtract row 2 from all the rows. In that case, you can do this.
>> A
A =
1 2 3 4
11 12 13 14
22 23 24 25
42 43 44 45
>> AsubRow2 = A - A(2,:)
AsubRow2 =
-10 -10 -10 -10
0 0 0 0
11 11 11 11
31 31 31 31
1 commentaire
Paul Hoffrichter
le 30 Jan 2021
Modifié(e) : Paul Hoffrichter
le 30 Jan 2021
But if you wanted to subtract all rows from row 2, then
>> A(2,:) - A
ans =
10 10 10 10
0 0 0 0
-11 -11 -11 -11
-31 -31 -31 -31
Plus de réponses (1)
Paul Hoffrichter
le 30 Jan 2021
I am taking a guess as to what you want. Would be nice if you gave a simple matrix, A, and showed the desired result. But here is my guess about how to subtract adjacent rows.
>> A = [ 1 2 3 4; 11 12 13 14; 22 23 24 25; 42 43 44 45]
A =
1 2 3 4
11 12 13 14
22 23 24 25
42 43 44 45
>> Adf = diff(A)
Adf =
10 10 10 10
11 11 11 11
20 20 20 20
2 commentaires
Paul Hoffrichter
le 30 Jan 2021
A = [ 1 2 3 4; 11 12 13 14; 22 23 24 25; 42 43 44 45];
B = myFunction(A);
I am not sure what you want. row' = row2 - row1. row' on the left hand side of an = sign is incorrect. Please write down what the values in B should be for the input matrix A.
Voir également
Catégories
En savoir plus sur Multidimensional Arrays dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!