How can I create a for cicle for the command 'readmatrix'?

I am trying to create a file.m like this; but if i have 321 file.txt (380_anaerobiosi.txt, 381_anaerobiosi.txt, 382_anaerobiosi.txt,....., untill to 700_anaerobiosi.txt) how can I repeat this cicle for all files to avoid to rewrite 321 strings?

T = readmatrix('/Users/chiara/Desktop/trachea16file/380_anaerobiosi.txt');
T1 = readmatrix('/Users/chiara/Desktop/trachea16file/381_anaerobiosi.txt');
T2 = readmatrix('/Users/chiara/Desktop/trachea16file/382_anaerobiosi.txt');
A = [T(20:30,2:2)];
B = [T1(20:30,2:2)];
C = [T2(20:30,2:2)];
X=[A,B,C]
csvwrite('X.csv',X)

[madhan ravi]

P.S: KSSV approach is wrong, that would read all the text files from that folder.

Commenting here since he deleted my comment, without any notice.

[KSSV]

@Madhan my intention is to show him to read all the files....so that he can try. It is not fair to comment without knowing what is my intention. Earlier also many times you have made such comments. Let the user try what he wants, let him learn and do what he wants. I am not here to provide the complete answer.

Commenting here since he deleted my comment, without any notice.

What notice you expect? Are you noticing me and making such comments?

Answer 1

[madhan ravi]

N = 380:700;
C = cell(N,1);
filename = '/Users/chiara/Desktop/trachea16file/%d_anaerobiosi.txt';
for k = 1:numel(N) 
    T = readmatrix(sprintf(filename,N(k)));
    C{k} = T(20:30,2:2);
end
X = cat(2, C{:});
csvwrite('X.csv',X)

[CHIARA TREGHINI]

Thank you very much. The code is perfect :)

Answer 2

[KSSV]

txtFiles = dir('*.txt') ; 
N = length(txtFiles) ; 
iwant = cell(N,1) ; 
for i = 1:N
    thisFile = txtFiles(i).name ; 
    T{i} = readmatrix(thisFile) ; 
end

[Nimet KARAGÖZ]

I am trying something like that for app designer. But in my case user selects files so we cannot know how many files the user has and what are file names. When I tried to select one file it works. But when I try "MultiSelect" option with for loop it doesn't work. I get that error:

"Dot indexing is not supported for variables of this type."

When I delete ".name" I get that error:

"Error using readmatrix "filename" must be a string scalar or character vector."

How can I fix it?

% Button pushed function: UploadButton
        function UploadButtonPushed(app, event)
            [file,path] = uigetfile('*.txt');
            selectedfile = fullfile(path,file);
            sampleData_ref=readmatrix(selectedfile);

This is what I can achived. And below what I can't.

                    % Button pushed function: UploadButton_2
        function UploadButton_2Pushed(app, event)            
            [file,path] = uigetfile('*.txt',...
                    'Select One or More Files',...
                    'MultiSelect', 'on');
            remainFiles = fullfile(path,file);
            files = length(remainFiles);
            app.EditField.Value = files;
          
            for run = 1: files
%                 switch run
%                     case {1,files}
                        thisFile = remainFiles(run).name;
                        sampleData_akt{run} = readmatrix(thisFile);
%                 end
            end
        end