Write a 2D character array to textual file
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Marko Gulin
el 6 de Sept. de 2017
Editada: Marko Gulin
el 6 de Sept. de 2017
Hy everyone,
What would be the best way in terms of computational time to write a 2D character array from Matlab to a textual file?
I've used this:
dlmwrite('file.txt', data, '');
but it is too slow.
I want to write a 2D character array so that each array row is printed on a new line.
Thanks!
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Stephen23
el 6 de Sept. de 2017
Probably the fastest way would be to use fprintf directly. Have you tried that?
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Cam Salzberger
el 6 de Sept. de 2017
Editada: Cam Salzberger
el 6 de Sept. de 2017
Hello Marko,
The most easily read code would probably be to either stick with dlmwrite, or loop through each row and use fprintf on an open file. However, if you want to avoid loops, you could do it like this:
fid = fopen('test.txt','w');
Anew = [A repmat(newline,size(A,1),1)];
fprintf(fid,'%s',Anew.');
fclose(fid);
Appending newlines on the ends of the rows makes it unnecessary to loop row by row. Transposing the array before writing it is necessary because fprintf works in linear indexing order (column-major).
-Cam
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