repeat rows and export to txt file
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I read in a txt file containing n colums and n rows. I need to repeat each row x number of times and then export the new file to a txt document. I.E
A=importdata('file.txt')
A = [1;2;3;4]
x= 3
A = [1;1;1;2;2;2;3;3;3;4;4;4]
exportdata('NewFile.txt')
4 Kommentare
Mohsin Zubair
am 8 Jul. 2021
@Jacob Weiss I told you that how can you create your desired output but to export it, there are many ways to do so, it depends how or in whih format you want to export your data, also can you share your orignal text file with data?
Mohsin Zubair
am 8 Jul. 2021
well what I told is just using loops which isn't good for long file, what scott told you is much better for file of your size
Antworten (1)
Scott MacKenzie
am 8 Jul. 2021
Bearbeitet: Scott MacKenzie
am 8 Jul. 2021
I think this is more or less what you're after:
% test data (read from file)
A = [1 8;2 7;3 6;4 5]
x = 3; % number of times to repeat each row (change as desired)
A1 = repmat(A', x, 1);
A2 = reshape(A1, size(A,2), [])'
% write to file
9 Kommentare
Scott MacKenzie
am 9 Jul. 2021
@Rik. Thanks. Yes indeed, much simpler. @Jacob Weiss with Rik's simplification, something like this will also work...
f = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/678488/Raj_AZ31_16120.txt';
A = readmatrix(f);
x = 3; % number of times to repeat each row (change as desired)
B = repelem(A, x, 1);
writematrix(B,'newfile.txt');
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