Input file editing format

Hi, Good morning

I have a text file el.txt which contains 4800 lines . I need to change linesand store in same text file or create a new file which ever it is fine according to user requirement for instance line 1,121,241,361,481,601 , 721,841,961,1081,1201,1321,1441,1561,1681,1801,.....so on to 4681. difference of 120 lines betweeen lines and next starts with line 2,122,242,361..... 4681.... thand next 3,123,243......it contines till 4800 lines. in this sequesnce lines to be stored in text file. Any help in this direction is appreciated. Thank you in advance.

[Bob Thompson]

How much of this process do you have so far? Is there a specific issue you're running into, or not sure how to do any of it in Matlab?

[RAKESH KUMAR TOTA]

I dont know how to do it in matlab .

Answer 1

[Mathieu NOE]

hello

I believe this code should work - I tested it only with loops = 2 even though I think you need to go up to 120

data = importdata('el.txt');

[m,n] = size(data);

loop = 2

% option 1 : split and save as separate files 
for ci = 1:loop
    ind = ci:120:m;
    data_out = data(ind,:);
    filename = ['data' num2str(ci) '.txt'];
    writematrix(data_out, filename);
end


% option 2 : or stack vertically  and save as one files 
data_all = [];
for ci = 1:loop
    ind = ci:120:m;
    data_out = data(ind,:);
    data_all = [data_all;data_out];
end
    filename = ['data' num2str(ci) '.txt'];
    writematrix(data_all, 'data_stacked.txt');