How to save a matrix as text file?

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Emerson De Souza
Emerson De Souza 2011-3-28
评论： Walter Roberson 2019-7-13
I want to save a matrix as text file.
Each column should be separated by tab.
The output file should be read with any text editor
When the output is opened, it should display the numbers
in the same way it looks like in Matlab.
Thank you for your help
Emerson

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采纳的回答

Matt Fig
Matt Fig 2011-3-28
One way is to use FPRINTF.
A = round(rand(6,7)*9) % Write this to file.
fid = fopen('Mymatrix.txt','wt');
for ii = 1:size(A,1)
fprintf(fid,'%g\t',A(ii,:));
fprintf(fid,'\n');
end
fclose(fid)
EDIT
Changed the 'w+' to 'wt' in the FOPEN call.
If you have floating point numbers, you may want to use '%20.18f \t' instead of '%g\t' or similar. See FPRINTF for format specifiers.

更多回答（3 个）

Sean de Wolski
Sean de Wolski 2011-3-28
doc dlmwrite
doc fwrite
  2 个评论
Bill Tubbs
Bill Tubbs 2019-7-13
dlmwrite is not recommended. Use writematrix instead.
Walter Roberson
Walter Roberson 2019-7-13
writematrix() did not exist in 2011 when the answer was posted.

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Walter Roberson
Walter Roberson 2017-12-16
You could also consider dlmwrite telling it to use \t as the delimiter.
You could also consider using
save('MyMatrix.txt', 'A', '-double', '-tab')
Where A is the name of the variable
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2019-2-5
double precision. Without the -double only about 7 digits are written out, about as much as needed to reproduce single precision numbers.

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Anmar Mohammed
Anmar Mohammed 2017-12-16
thank you very much sir

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