Adding elements of matrix according to criteria
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi there,
I have a quick question which should be trivial to solve but I cannot figure out how to solve it.
I have 2 matrices:
- Matrix A with dimensions (2x40x2x1000)
- Matrix B with dimensions (2x40x2)
I want to add matrix A elements along the 4th dimension if the element is above the one on matrix B.
So if elements (1,1,1,:) of matrix A are bigger than element (1,1,1) of matrix B, I want to add them up. If elements (2,1,1,:) of matrix A are bigger than element (2,1,1) of matrix B, I want to add them up. etc
What is the easiest way to do it?
0 Kommentare
Antworten (2)
Jan
am 8 Mär. 2015
The term "add them up" is not clear. A small example would be nice. I guess it could mean something like this:
S = zeros(size(B));
for k = 1:1000
Ak = A(:, :, :, k);
M = Ak > B;
S(M) = S(M) + Ak(M);
end
Or:
S = zeros(size(B));
for k = 1:1000
Ak = A(:, :, :, k);
S = S + Ak .* (Ak > B);
end
0 Kommentare
Siehe auch
Kategorien
Mehr zu Multidimensional Arrays finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!