How to save following parameters in this loop?

Question

Ahmed 2024-1-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2076656-how-to-save-following-parameters-in-this-loop

回答： Aastha 2024-10-5

Hi,

I am applying a look for k = 1:500 (shown below) on three paramters ip0, is0, rho0 (each of is 101 * 500) and saving outputs Final_ip, Final_is, Final_rho (of same size lines - 61 - 63). This works iteratively and for each simulation number of iterations (iters in line 53) and hist are diffrent. I want save iters and hist for all 500 simulations/iterations. How can I save it? The size of hist maybe 1*167 and iters is just number of iterations (1 * 1).

If I want know during 500 iterations run that the code is currently on which iteration. How I can check, I mean how code can also show live iteration number/simulation number?

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Ahmed 2024-2-3

Dear @Dyuman Joshi

The problem is code does not store hist for all iterations. It only store the hist of last iteration. Can you plz help how to formulate the code in this case?

Mathieu NOE 2024-2-6

pls share the code , not a picture of it

tx

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Answer 1

Aastha 2024-10-5

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https://ww2.mathworks.cn/matlabcentral/answers/2076656-how-to-save-following-parameters-in-this-loop#answer_1527250

在 MATLAB Online 中打开

Hi Ahmed, 

I understand that you want to save the values of “hist” and “iters” for each iteration in for loop and display the current iteration number. You can do this by using the MATLAB code below:

storage_arr = {}; % create a cell array to save the data 
cnt = 1; 
for k = 1:10000 
% insert your code here 
storage.iters = iters; % create a struct to hold the saving data 
storage.hist = hist;  
storage.k = k; 
storage_arr{cnt} = storage; % save the data in the cell array 
cnt = cnt + 1; % counter to track the array index 
disp(['Current Iteration is : ',num2str(k)]); % display the current iteration number 
end 

In this way, you can save the data for each iteration in a cell array of structs. To display the current iteration number, you can use the "disp" function in MATLAB along with the "num2str" function which converts the iteration number to a string.

You can find the link to MathWorks documentation for the functions used in the code below:

-num2str: https://www.mathworks.com/help/matlab/ref/num2str.html

-disp: https://www.mathworks.com/help/matlab/ref/disp.html

I hope this helps!