how do obtain sum of two rows

Have a 18482 x 7 matrix. I want to obtain a matrix which contains the sum of row 1 and 2, row 3 and 4, etc until the last ones being the sum of row 18481 and 18482. How do I do this. Thanks in advance

Answer 1

[Walter Roberson]

output = YourMatrix(1:2:end, :) + YourMatrix(2:2:end, :);

[Rik]

That's what you get with ambivalent questions, there are multiple answers that fit the question.

[Johannes Deelstra]

thanks for answering, two solutions, helpful

Answer 2

[Rik]

x=rand(18482,7);
x2=sum(x,2);
x2=x2(1:2:end)+x2(2:2:end);