how to batch save and load loop variable

Question

peter huang 2022-6-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1743555-how-to-batch-save-and-load-loop-variable

评论： Stephen23 2022-6-19

Hello, everyone

I want to access the result of each calculation in the loop calculation I would like to ask if MATLAB has any instructions for batch storage and batch input of variables? and I want to make each stored variable have a different name

ex code

for i = 1:3

a = rand(1,10)

end

a =

0.5817 0.5337 0.8386 0.3502 0.3441 0.9860 0.8664 0.5777 0.2776 0.2758

a =

0.2768 0.5556 0.1333 0.3556 0.8931 0.9569 0.0273 0.2038 0.2547 0.7161

a =

0.2658 0.2586 0.4210 0.5831 0.6447 0.0349 0.2437 0.3171 0.3266 0.4875

I want to convert each generated a into a mat file and be able to read these three sets of a to matlab

Because using normal access will be overwritten because the name is all a

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Stephen23 2022-6-19

"Because using normal access will be overwritten because the name is all a"

Only if you write code that overwrites that variable.

"I want to make each stored variable have a different name"

That would be a very complex and inefficient approach, whereas you could just use simple and efficient indexing.

What is stopping you from using basic indexing?

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KALYAN ACHARJYA 2022-6-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1743555-how-to-batch-save-and-load-loop-variable#answer_988835

编辑：KALYAN ACHARJYA 2022-6-19

在 MATLAB Online 中打开

#Cell Array cell

a=cell(1,3);
for i = 1:3
    a{i}=rand(1,10)
end

Once strore in the cell array, you can do/access data in easiest & efficient way.

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。

Answer 2

Voss 2022-6-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1743555-how-to-batch-save-and-load-loop-variable#answer_988840

在 MATLAB Online 中打开

How about making a a matrix?

a = zeros(3,10);
for i = 1:3
    a(i,:) = rand(1,10);
end
disp(a);
    0.6037    0.8371    0.3572    0.1454    0.0825    0.5461    0.5211    0.5553    0.2386    0.9297
    0.6848    0.8260    0.3338    0.5792    0.9571    0.5220    0.1013    0.0640    0.6952    0.6487
    0.6763    0.6561    0.1229    0.5876    0.1097    0.0735    0.6933    0.0960    0.8610    0.0459

Or, if each iteration produces a vector of a different length, make a a cell array:

a = cell(3,1);
for i = 1:3
    a{i} = rand(1,randi(10));
end
disp(a);
    {[                                                 0.0980 0.9935]}
    {[0.9495 0.0781 0.8634 0.3343 0.1644 0.7231 0.6781 0.6991 0.4505]}
    {[              0.9395 0.4197 0.9975 0.2326 0.2881 0.4256 0.7652]}