multiply two series of vector in loops
1 view (last 30 days)
Show older comments
Hello, I have 1485 versions of a vector (41) so a matrix of 1485x41 and I have two matrix like this, so MA=1485x41 and MB=1485x41
I would like to multiply all the vectors (41) possibility to get a final Matrix of 2205225x41. I tried with loops but failed.
Here is my code:
% MA=1485x41 and MB=1485x41
vectorA=cell(size(MA,1),1); %index vector in a cell array
vectorB=cell(size(MB,1),1); %index vector in a cell array
solution=nan(length(MA(:,1)).*length(MB(:,1)), length(t)); %t=41 here is the final matrix that I would need
for i =1 : size(chemACIm,1)
for j=1:size(chemBCIm,1)
vectorA{i}=MA(i,:);
vectorB{j}=MB(j,:);
output(i, j, :)=MA(i,:).*MB(j,:); %
end
end
Thank you in advance for your answer,
Sylvain
0 Comments
Accepted Answer
Guillaume
on 12 Sep 2019
Assuming R2016b or later:
result = MA .* permute(MB, [3, 2, 1]);
will give you a 3D matrix, where result(i, :, j) is MA(i, :) .* MB(j, :)
I would suggest you keep the result like that, but if you really want a 2D matrix, then:
result = reshape(permute(MA .* permute(MB, [3, 2, 1]), [1, 3, 2]), [], size(MA, 2))
More Answers (0)
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!