필터 지우기
필터 지우기

How to deal with the presence of [] during the summation of arrays

조회 수: 1 (최근 30일)
Hi all,
There are four columns in each row, I want to add four arrays in each row to get a new array, but some of the rows have [], and I get an error when I run the addition, how can I handle it? The screenshot of structure is presented following:
I wrote some code, but it was wrong and did not work
for m = 1 : 5
if ~isempty(O(m).A1) || ~isempty(O(m).A2) || ~isempty(O(m).A3) || ~isempty(O(m).A4)
O(m).A5 = O(m).A1 + O(m).A2 + O(m).A3 + O(m).A4;
end
end
Thanks in advance for the support and help!

채택된 답변

Srivardhan Gadila
Srivardhan Gadila 2021년 11월 16일
One possible way is as follows:
a = [];
b = [];
c = randn(10,1);
d = randn(10,1);
sumResult = sum(cat(2,a,b,c,d),2);
Refer to the documentation of functions sum & cat for more information.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Matrix Indexing에 대해 자세히 알아보기

Community Treasure Hunt

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

Start Hunting!

Translated by