Why am i getting this error 'unrecognized function or variable' for the defined function itself

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function po(conc,p,k)
main_directory = "D:\Thesis'\New_samples";
s1 = 'PO_CN';
folder = fullfile(main_directory, strcat(s1, conc, '_', p));
sub_folder = fullfile(folder, strcat(s1, conc, '_', p, '_', k));
MM = readmatrix(fullfile(sub_folder,'MuellerMatrixausschnitt36 Bilder.txt'));
end
Error: PO "undefined function or variable"
  3 Comments
Image Analyst
Image Analyst on 22 Jun 2022
Edited: Image Analyst on 22 Jun 2022
Are conc, p, and k all character arrays or strings? None are numbers, right?
How did your main program call the function "po", like what variable values did it pass to it?
Attach ALL THE RED TEXT, not just a snippet from it like you did. It should show line number, the actual line of code, and the full error message, including traceback.
Attach the po.m file. Does the capitalization of the file match that on the "function" line?
If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

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Answers (1)

Stephen23
Stephen23 on 22 Jun 2022
Edited: Stephen23 on 22 Jun 2022
clc % <---------- !!!!!!!!!!!!!!!!!! DELETE THIS LINE !!!!!!!!!!!!!!!!
% <- and this line too
function MM = po(conc,p,k)
...
end
If you want to call the main function po(), then you cannot have any other code before that function.

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