User defined function in for loop

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Doron Joffe 2021-12-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1600179-user-defined-function-in-for-loop

编辑： Doron Joffe 2021-12-1

I have created a loop to loop through a series of csv files and perform functions. The code I wrote is below:

file=('list of my files')
for i = 1:length(file)  
   csv = readtable(file{i});
    Date=csv{1,2}
    D(i,:)=Date %% I get a cell array with the dates from each file
end

The code that I wrote works but I need to transform it into a user-defined function. I have tried creating the function below. However, when I call the function I do not get the required results. Am I creating the function incorrectly?

    function [csv,D] = read_function(i,file,a,b);
csv = readtable(file{i});
 Date=csv{a,b};
    D(i,:)=Date
    end
    
    %%% In a new window I call the function like this
   file=('list of my files')
    for i = 1:length(file)  
    a=1;
  b=2; 
  [csv,D] = read_function(i,file,a,b);
    end