Divide elements of matrix by scalar
11 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
for i = 1:N
P(i) = P(i)/2;
end
I have this for loop that's supposed to divide each element of P by two, then I graph P but it's always double what it needs to be. N is 120 and P is a 1x120 array so it's not an indexing problem.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/912545/image.jpeg)
When I isolate my P array in another script and divide each element by 2 my graph looks how I want it to
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/912550/image.jpeg)
Why won't my intial code divide by 2? Any help is greatly appreciated.
0 commentaires
Réponses (1)
the cyclist
le 3 Mar 2022
Are you doing this for loop inside a function? If so, the operation you are doing is only on the local copy of P. You need to output that new value of P from the function. Something like
function P = divideByTwo(P)
for i = 1:N
P(i) = P(i)/2;
end
end
Voir également
Catégories
En savoir plus sur Loops and Conditional Statements 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!