Storing Multiple Matrices from a For Loop

184 次查看（过去 30 天）

Shane 2013-4-7

5
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/70824-storing-multiple-matrices-from-a-for-loop

评论： Walid 2023-7-22

How do I index and store multiple matrices as a run through a for loop? For instance, I generate a 10x10 matrix the first time through and I want to store this result for access later before proceeding to the next matrix generation.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Cedric 2013-4-7

46
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/70824-storing-multiple-matrices-from-a-for-loop#answer_81390

编辑：Cedric 2013-4-7

在 MATLAB Online 中打开

You can use a cell array, e.g

 n = 10 ;
 M = cell(n, 1) ;
 for k = 1 : n
    M{k} = 20*k + rand(10) ;
 end

you can see that each

M{1}, M{2}, etc

is a the 10x10 matrix defined at a specific iteration of the loop.

Note the difference between regular block indexing with () and accessing cells content with {}:

M(1)

is cell #1 of the cell array M, whereas

M{1}

is the content of cell #1 (in the present case, it is a 10x10 matrix).

15 个评论
显示 13更早的评论隐藏 13更早的评论

Bryan Guilcapi 2022-7-20

Hi, i have a question, is possible to plot all this cell in one plot calling the data that are inside of the cell?

Walid 2023-7-22

thank you

请先登录，再进行评论。

更多回答（2 个）

Saeed Bello 2017-8-7

7
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/70824-storing-multiple-matrices-from-a-for-loop#answer_277045

在 MATLAB Online 中打开

You can use a three-dimensional matrix e.g.

for i = 1:8 % no. of iteration
  S(:, :, i) = myfunx(i,10); % 10 x 10 output
end

Then you can access each iteration by calling S(:, : , 1) or S(:, : , 2) or S(:, : , 3) and so on. Source:https://stackoverflow.com/questions/30036908/output-of-for-loop-as-a-matrix-matlab

3 个评论
显示 1更早的评论隐藏 1更早的评论

ELIAS PERATICOS 2018-4-27

Saeed Bello, thanks a lot this was very useful.

rees adah 2018-10-31

I also have a similar problem but this solution didn't work for me.i intend to store the matrices coming from a nested for loop into a multidimensional array and reference it later...how do I do that please?

请先登录，再进行评论。