I have an array M=(1000000,12,2,2).

How do I write it to a file to work on later?

save('filename.txt','M','-ASCII')

doesn't seem to work...

Regards,

解決方案

1) just like the answer from @Shai, you can save it to be mat file

2) if you want to save it to be txt file, you can do it in this way:

clear;clc;

M=[1000000,12,2,2];

dlmwrite('a.txt',M); % save M to file--a.txt

type a.txt; % print content in a.txt

M = dlmread('a.txt'); % load content of a.txt to M and then you will have 'M=[1000000,12,2,2]'

3) you can also use fopen, fprintf, fclose to save a matrix to a file. check this post: How to save data in .txt file in MATLAB

4) for the code you have, I tested it. It works. The Matlab version I have is R2011b. please check your code again. The code I used to test is as follows:

clear;clc;

M=[1000000,12,2,2];

save('b.txt','M','-ASCII');

clear;clc;

M = load('b.txt','-ASCII');

總結

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