How to apply fprinf for matrix
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I would like to use fprintf for Writing data to a text file. I want to apply fprintf on the following matrix. I have a matrix with n rows and 3 columns. please help with this issue. thanks a lot. for instance.
0.0000 0.0000 0.0000
0.0000 0.1000 0.0000
0.0643 0.0675 0.0000
0.1000 0.0000 0.0000
0.0000 0.2000 0.0000
0.2000 0.0000 0.0000
0.0725 0.1500 0.0000
0.1488 0.0873 0.0000
0.0726 0.2501 0.0000
0.0000 0.3000 0.0000
0.0000 0.4000 0.0000
0.3000 0.0000 0.0000
0.4000 0.0000 0.0000
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Risposta accettata
Stephen23
il 27 Mag 2016
Modificato: Stephen23
il 27 Mag 2016
This is MATLAB, so there really is no point in using an ugly loop when you can do it much faster and simpler with just one csvwrite call:
csvwrite('test.csv',M)
M = [...
0.0000,0.0000,0.0000;...
0.0000,0.1000,0.0000;...
0.0643,0.0675,0.0000;...
0.1000,0.0000,0.0000;...
0.0000,0.2000,0.0000;...
0.2000,0.0000,0.0000;...
0.0725,0.1500,0.0000;...
0.1488,0.0873,0.0000;...
0.0726,0.2501,0.0000;...
0.0000,0.3000,0.0000;...
0.0000,0.4000,0.0000;...
0.3000,0.0000,0.0000;...
0.4000,0.0000,0.0000];
%
fid = fopen('test.csv','wt');
fprintf(fid,'%f,%f,%f\n',M.')
fclose(fid);
Più risposte (3)
Stalin Samuel
il 27 Mag 2016
%example code
s = rand(10,3);
fileID = fopen('a.txt','w');
for i=1:length(s)
fprintf(fileID,'%g\t%g\t%g \r\n',s(i,:));
end
fclose(fileID);
TastyPastry
il 27 Mag 2016
fh = fopen('newFile.txt','w');
for i=1:size(myData,1)
fprintf(fh,'%d %d %d\n',a(i,1),a(i,2),a(i,3))
end
Guillaume
il 27 Mag 2016
dlmwrite('test.csv', M, 'delimiter', ' ');
or if you want to specify the precision
dlmwrite('test.csv', M, 'delimiter', ' ', 'precision', '%6.4f');
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