Column Vector Containing the Row Sums of the Elements of A

5 vues (au cours des 30 derniers jours)
Sophie Culhane
Sophie Culhane le 23 Sep 2020
Commenté : Ameer Hamza le 23 Sep 2020
My task is to write a MATLAB function that takes as input a nonemty 2-dimensional array A and returns a column vector containing the row sums of the elements of A. I have a program written out, however it calculates and sum of all elements and puts them in a column vector. Please help me figure out how to only add the elements of one row and continue with the next. Here is what I have so far:
function RowSum = ex(A)
%
%
[NRows, NCols] = size(A);
RowSum = zeros(NRows, 1);
for row = 1: NRows
for col = 1: NCols
RowSum = RowSum + A(row, col);
end
end
Thank you in advance for the help.

Réponse acceptée

Ameer Hamza
Ameer Hamza le 23 Sep 2020
Modifié(e) : Ameer Hamza le 23 Sep 2020
Why not use the builtin function
M = rand(10, 5);
M_sum = sum(M, 2)
As for your current code, the correct is
function RowSum = ex(A)
%
%
[NRows, NCols] = size(A);
RowSum = zeros(NRows, 1);
for row = 1: NRows
for col = 1: NCols
RowSum(row) = RowSum(row) + A(row, col);
end
end
  3 commentaires
Sophie Culhane
Sophie Culhane le 23 Sep 2020
Thank you for your response.
Ameer Hamza
Ameer Hamza le 23 Sep 2020
I am glad to be of help!

Connectez-vous pour commenter.

Plus de réponses (2)

madhan ravi
madhan ravi le 23 Sep 2020
doc sum

Alan Stevens
Alan Stevens le 23 Sep 2020
Matlab has the function "sum". Try help sum.

Community Treasure Hunt

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

Start Hunting!

Translated by