HOW TO MERGE MANY .TXT FILES WITH A LOOP?

Hello,

I have a question? How could I merge many txt files in one file with a loop? For example I have File1, File2, File3.txt, ..... , . in the same directory

Answer 1

[Mehmed Saad]

File_all contains data of all file.

fid_p = fopen('File_all.txt','w'); % writing file id
x = 1:100;
for i =1:length(x)
    filename = ['File',num2str(x(i)),'.txt'];%filename
    fid_t=fopen(filename,'r');%open it and pass id to fscanf (reading file id)
    data = fscanf(fid_t,'%c');%read data
    fprintf(fid_p,'%c',data);%print data in File_all
    fclose(fid_t);% close reading file id
end
fclose(fid_p); %close writing file id

[Ivan Mich]

ok, thank you. One more question. If I don't know the number of the files? How could I change the above code for undetermined number of .txt files?

[Mehmed Saad]

suppose you are in the folder in which all your text files are present

type

x= dir ('*.txt');

all the text files properties are now in variable x

only change in code is

    filename = x(i).name;

[Ivan Mich]

ok but my results are horizontally in the final .txt file. How could I do it vertically?

[Rik]

You can add a newline:

fid_p = fopen('File_all.txt','w'); % writing file id
x = 1:100;
for i =1:length(x)
    filename = ['File',num2str(x(i)),'.txt'];%filename
    fid_t=fopen(filename,'r');%open it and pass id to fscanf (reading file id)
    data = fscanf(fid_t,'%c');%read data
    fprintf(fid_p,'%c',data);%print data in File_all
    fclose(fid_t);% close reading file id
    fprintf(fid_p,'\n');%add newline
end
fclose(fid_p); %close writing file id

[Adam Danz]

Ivan Mich, don't forget to accept the answers to questions that were helpful to you. You've got lots of answers but few are accepted. If the answers weren't helpful, leave feedback so future visitors can benefit from the dialog. Here's a list of your questions.