How can I make a vector from the elements in the same position across many matrices?

1 次查看（过去 30 天）
Patrick
Patrick 2013-10-30
回答： sixwwwwww 2013-10-30
I have 736 matrices of size 72x144. I want to find a vector of 736x1, where each element of the new vector represents the element from the same position in each of the original matrices.
For example:
A = [ 1 2 3 | 4 5 6 | 7 8 9 ]
B = [ 2 2 2 | 3 3 3 | 4 4 4 ]
C = [ 5 4 3 | 1 2 3 | 5 6 7 ]
Want:
D4 (position 2,1) = [ 4 3 1 ]
D5 (position 3,2) = [ 8 4 6 ]
What is the easiest way for me to do this? I can do it manually, but it will take me all weekend. Please help!

请先登录，再回答此问题。

采纳的回答

sixwwwwww
sixwwwwww 2013-10-30
Dear Patrick, you can do it as follows:
NumberOfMatrices = 736;
A = randi(100, 72, 144, NumberOfMatrices); % Your 736 matrices
for i = 1:NumberOfMatrices
B{i} = reshape(A(:,:,i)', 1, []);
end
C = reshape((cell2mat(B)), [], NumberOfMatrices); % Each row of C represent one vector of length 736 from corresponding values from 736 matices
I hope it helps. Good luck!

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by