MATLAB: How to import files from a folder one at a time

fileMATLAB

I have many files (>250) named '1.txt','2.txt',etc. If I'm reading them using

Filelist = dir('*.txt')

The information is getting altered in the program (I don't know how). So, I want to read files one by one. like

   Filelist = dir('1.txt')

and so on… I can't figure out how to change the file name from 1.txt to 2.txt… after I have read the first file. Kindly help.

Best Answer

If the information is getting altered by the program, make a backup copy of the variable?

See https://www.mathworks.com/matlabcentral/answers/404204-how-to-import-data-from-multiple-files-into-matlab#comment_575446 for example code.

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Like this? Running the following code at the directory where your data (*.txt) is stored, it extracts 1501~16500 rows and saves as a new data file (*b.txt).

fileList = dir('*.txt');
for kk = 1:numel(fileList)
  A = importdata(fileList(kk).name,'\t',3);
  data = A.data(1501:16500,:);
  [~,name,ext] = fileparts(fileList(kk).name);
  fileName = [name,'b',ext];
  dlmwrite(fileName,data,'precision',6);
end

Best Answer

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