How to add rows of data in a 5x5 Matrix

1 次查看(过去 30 天)
Hi, I want to add entries in each row and put zero in the Inf place but I want to use for loop? I tried this
if true
A = sum(A,2);
end
But I am want to put entries equal to Inf to zero and then add them.

采纳的回答

James Tursa
James Tursa 2016-2-3
If you want to replace the inf values with 0 first, then
A(isinf(A)) = 0;
  3 个评论
Guillaume
Guillaume 2016-2-3
编辑:Guillaume 2016-2-3
Wow! You like copy pasting . As soon as you start writing lines of code that only differ according to a pattern, you have to think that the program can do that for you.
The whole of the above code could be replaced by these two lines:
rows = [1, 2, 3, 1, 1]; %row to sum
sumA(rid, tid) = sum(A(rows(rid), setdiff(1:5, [rid tid])));
And if you made a typo and forgot to replace the row number in the case 4 and case 5 (another reason for not copy-pasting redundant code), then it's even simpler:
sumA(rid, tid) = sum(A(rid, setdiff(1:5, [rid tid])));
Arsal15
Arsal15 2016-2-3
Thanks alot Guillaume :)
I think in the rows = [1,2,3,4,5] ?? You solved my issue and what if I have to choose a non zero entry of the matrix from a 5x5 matrix. Only one non zero and all zeros and I have to pick that and use for my calculations.

请先登录,再进行评论。

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 Matrix Indexing 的更多信息

Community Treasure Hunt

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

Start Hunting!

Translated by