generate and save numerous datas in one code then load them in another code

Question

mingcheng nie 2023-1-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1891277-generate-and-save-numerous-datas-in-one-code-then-load-them-in-another-code

编辑： VBBV 2023-1-11

Hi there, if I have two code 'A.m' and 'B.m' under the same file. In 'B.m' I will generate a few variables. I want to save those variables and then load them in 'A.m'. For example, I have p=randi([-5,5]); q=randn(3,2) in 'B.m', somehow I save them, then in 'A.m', after load, the p and q will appear in 'A.m' directly and can use them directly, just like after load , in the next line I can operate 'n=p+q'.

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。

Answer 1

VBBV 2023-1-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1891277-generate-and-save-numerous-datas-in-one-code-then-load-them-in-another-code#answer_1145347

在 MATLAB Online 中打开

% in A.m file
[p,q] = B  % call the function wbich returns those outputs variables (values) 
p = 3
q = 3×2
   -2.0504   -0.5961
    0.0466    1.8645
   -0.2761    2.0829
n = p + q  % add them directly as you wanted 
n = 3×2
    0.9496    2.4039
    3.0466    4.8645
    2.7239    5.0829
% in B.m   save this in another m file with same name (say) B and in same
% folder
function [p,q] = B
p = randi([-5,5]);
q = randn(3,2);
end

3 个评论
显示 1更早的评论隐藏 1更早的评论

mingcheng nie 2023-1-11

Hi, thank you for you answer. However, I know the 'function' way, the reason I want to do the 'save' and 'load' is that I will have huge datas generated from different distribution in B.m, so I want generate those data first, then load them to my main function, so that I don't need to generate those datas each time I run the main function. I gave the example p and q just for simple understanding of my question. In my actual code, B.m will contains 12 variables, each variables will extract value from different distribution for 20000 times.

VBBV 2023-1-11

编辑：VBBV 2023-1-11

在 MATLAB Online 中打开

In that case, you can load the data files( preferably *.mat) into workspace using a for loop

for k = 1:length(Files)
   K{k} = 
 load(sprintf('file%d.mat',k));
end

K is an array of structures which contains data fields from each individual data file. This can accessed conveniently inside another loop in the main function including data present its fields. Hope it helps. Files is the number of data(mat) files present accessed.

请先登录，再进行评论。