What do I have to add at the beginning of this loop?

Question

how I can read the following files using the for loop: (can the loop ignore the characters in filenames?)

abc-1.TXT
cde-2.TXT
ser-3.TXT

Answer 1

You can avoid constructing the filenames by using the DIR command. For instance:

myfiles = dir('*.txt');
for i = 1:length(myfiles)
    nom_fichier = myfiles(i).name;
    ...do processing here...
end

Answer 2

First of all, why would you use strcat here? This is, by itself, a SINGLE string. All concatenation has already been done by the brackets [].

['MyFile\.......' num2str(i) '.TXT']

Next, I'm not certain what is your question here. Is it how to load in the data? If the files are simply delimited numbers, with the same number of them on each line, then load will suffice to load them in, or perhaps you may need textread.

My guess is you do not know how to build the main part of of the file name. You might do it this way:

Names = {'abc' 'cde 'ser' 'wsz' 'aqz' 'iop'};
for i = 1:6
  fn = ['MyFile',filesep,Names{i},'-',num2str(i),'.TXT'];
  data = load(fn);

  % do other stuff ...

end

If you don't want to create a variable with the names by typing them in, then use dir, perhaps like this to create a list of text file names:

Names = dir('MyFile\*.TXT');