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Hello, I have data that is n x m (rows,column). I want to read each column and perform some analysis on the data prior to moving on to another column and performing the same analysis.
Is there a method on how to perform this reiterative process? Thanks,

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Voss
Voss 2022-2-1

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If you have an n-by-m matrix you can do as follows:
n = 100;
m = 50;
data = randn(n,m);
results = cell(1,m);
for jj = 1:m
results{jj} = perform_analysis(data(:,jj));
end
Where perform_analysis() is a function that performs the analysis you want to do on each column and returns something.
If instead your data is in a file, it may or may not be convenient to read it by column, depending on the file format.

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Arif Hoq
Arif Hoq 2022-2-1
hello @Benjamin. would you please light up about this error? is it matlab tool related error?
Unrecognized function or variable 'perform_analysis'.
Error in Untitled47 (line 9)
results{jj} = perform_analysis(data(:,jj));
Michael Angeles
Michael Angeles 2022-2-1
Thank you, I forgot to state that the data are in cells array.
Voss
Voss 2022-2-1
@Arif Hoq: perform_analysis() is meant to be a stand-in for whatever analysis needs to be done on each column of data.
@Michael Angeles: The indexing syntax is the same for a cell array. You'd be dealing with an n-by-1 cell array rather than an n-by-1 column vector each time through the for loop.
Michael Angeles
Michael Angeles 2022-2-1
Thank you for your help, I was able to get the program running.

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