How to read and write a matrix in/from a file on MATLAB?

Question

Rahim Rahim 2020-12-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/691440-how-to-read-and-write-a-matrix-in-from-a-file-on-matlab

回答： Image Analyst 2020-12-12

Let's we assume that, I have a matrix :

 %A=[M,N];
 A=[ 5 5 5 5 5 55  5 55 5 ]

, I want to save A in a file TXT. and I can't open that file another time. Also I can modify that file, for example A=A*5;

I did not find the code.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2020-12-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/691440-how-to-read-and-write-a-matrix-in-from-a-file-on-matlab#answer_573200

在 MATLAB Online 中打开

Why can't you open it at another time? How did you write it? Did you use writematrix() or csvwrite()? Or did you use fprintf() but forgot to call fclose():

fid = fopen('TXT.txt', 'wt');
fprintf(fid, '%d ', A);
fclose(fid);  % You need this, otherwise MATLAB MAY have a lock on it and other programs won't be able to open it.