MATLAB-通过垂直级联子矩阵重新排列矩阵 [英] MATLAB - re-arrange matrix by vertically concatenating submatrices

问题描述

我在执行以下任务时遇到麻烦: 假设一个3x6矩阵:

I am having trouble with the following task: Suppose a 3x6 matrix:

A =

0.2787    0.2948    0.4635    0.8388    0.0627    0.0435
0.6917    0.1185    0.3660    0.1867    0.2383    0.7577
0.6179    0.7425    0.0448    0.4009    0.9377    0.4821

我想做的就是将矩阵分成多个块，如下所示:

What I would like to do is to divide the matrix into blocks, like this:

A =

0.2787    0.2948  |  0.4635    0.8388  |  0.0627    0.0435
0.6917    0.1185  |  0.3660    0.1867  |  0.2383    0.7577
0.6179    0.7425  |  0.0448    0.4009  |  0.9377    0.4821

并垂直连接这些块以获得最终结果:

and vertically concatenate these blocks to get the final result:

0.2787    0.2948 
0.6917    0.1185  
0.6179    0.7425  
0.4635    0.8388
0.3660    0.1867
0.0448    0.4009
0.0627    0.0435
0.2383    0.7577
0.9377    0.4821

我想如果我可以在这方面获得帮助，那么我也许可以 对任意矩阵A都可以做到 使用for循环时出现问题，但我正在寻找向量化解决方案.

I think if I can get help with this, then I can perhaps do it for arbitrary matrices A. I can solve the above problem using for-loops, but I am looking for a vectorised solution.

提前谢谢！ N.

推荐答案

请考虑以下内容:

A = rand(3,6);
blkSz = 2;

C = mat2cell(A, size(A,1), blkSz*ones(1,size(A,2)/blkSz));
C = cat(1,C{:})

这假定size(A,2)被blkSz

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