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
1 件のコメント
採用された回答
Stephen23
2016 年 5 月 27 日
編集済み: Stephen23
2016 年 5 月 27 日
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);
その他の回答 (3 件)
Stalin Samuel
2016 年 5 月 27 日
%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
2016 年 5 月 27 日
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
2016 年 5 月 27 日
dlmwrite('test.csv', M, 'delimiter', ' ');
or if you want to specify the precision
dlmwrite('test.csv', M, 'delimiter', ' ', 'precision', '%6.4f');
参考
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