# Subtraction of elements in successive rows

10 visualizzazioni (ultimi 30 giorni)
Shreya George il 1 Feb 2021
Commentato: Shreya George il 2 Feb 2021
I have a matrix 'a'. I need an output matrix 'A' with each row equal to the difference between successive rows of the parent matrix 'a'. Is there a way to do this? I tried coding it in the following manner but keep getting an error message 'Unable to perform assignment because the left and right sides have a different number of elements.'
a=[1 2;2 4;3 6];
A=zeros(2,2);
for i=1:2
A(i)=(a(i+1,:)-a(i,:));
end
The expected result is A=[1 2; 1 2]
##### 0 CommentiMostra -2 commenti meno recentiNascondi -2 commenti meno recenti

Accedi per commentare.

### Risposta accettata

William il 1 Feb 2021
The easy way to do this is
A = diff(a);
##### 2 CommentiMostra NessunoNascondi Nessuno
Stephen23 il 1 Feb 2021
Even better, specify the dimension:
b = diff(a,1,1)
ans = 2×2
1 2 1 2
Shreya George il 2 Feb 2021
Thanks

Accedi per commentare.

### Categorie

Scopri di più su Elementary Math in Help Center e File Exchange

### Community Treasure Hunt

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

Start Hunting!

Translated by