How to save this matrix?

Question

Amanda Queiroz 2021-12-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1617055-how-to-save-this-matrix

编辑： Amanda Queiroz 2021-12-28

采纳的回答： dpb

在 MATLAB Online 中打开

I have 12 columns in matrix:

For example:

6,2713	1,0876	23,3585	31,5388	51,1182 27,1688	9,6255	0,7503	0	0	0	0,3299	-5,8128	-37,5098
6,0273	1,0467	22,9448	31,1567	48,5899	26,2585	9,6405	0,7245	0	0	0	0,3299	-5,8173	-37,5098
5,6551	0,9194	22,7827	29,8986	47,5964	24,7148	9,7817	0,6674	0	0	0	0,3299	-5,8217	-37,5098

How to save this matrix with fprintf for txt file?

I tried

fileID = fopen('test.txt','w');
fprintf(fileID,'%.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n',[a,b,c,d,e,f,g,h,i,j,k,l,m,n];

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Answer 1

dpb 2021-12-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1617055-how-to-save-this-matrix#answer_861505

在 MATLAB Online 中打开

If there's just one array/matrix M, then

fid=fopen('test.txt','w');
fmt=[repmat('%.4f',1,size(M,2)) '\n'];            % build format string
fprintf(fid,fmt,M.')                              % write -- NB: to transpose 
fid=fclose(fid);

But, I'd recommend using one of the higher-level routines instead of the low-level i/o unless the desired file format is one that can't be written otherwise. See

doc writematrix

and friends...