How can I write an array to a txt file such that it looks like MATLAB syntax

Question

David Gillcrist 2023-4-25

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1952949-how-can-i-write-an-array-to-a-txt-file-such-that-it-looks-like-matlab-syntax

回答： Fangjun Jiang 2023-4-25

采纳的回答： Fangjun Jiang

在 MATLAB Online 中打开

If I have an array, for example

A = [1 2 3 4;

-1 0 1 2;

3 9 5 7;

12 100 1000 1012];

How can I write this to a text file such that when I do, it will look the same as what I wrote to declare A? In otherwords I want the txt file to contain

A = [1 2 3 4; 
-1 0 1 2; 
3 9 5 7; 
12 100 1000 1012];

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Answer 1

Fangjun Jiang 2023-4-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1952949-how-can-i-write-an-array-to-a-txt-file-such-that-it-looks-like-matlab-syntax#answer_1223139

在 MATLAB Online 中打开

use mat2str(), write the string to the text file

A = [1 2 3 4; 
    -1 0 1 2; 
    3 9 5 7; 
    12 100 1000 1012];
str=mat2str(A)
str = '[1 2 3 4;-1 0 1 2;3 9 5 7;12 100 1000 1012]'
eval(str)
ans = 4×4
           1           2           3           4
          -1           0           1           2
           3           9           5           7
          12         100        1000        1012