How to save number of arrays as different instances in a file?

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Ravi Teja
Ravi Teja 2013-12-13
回答： Walter Roberson 2013-12-13
I have saved two arrays in a file but as a single instance. I wish to save them seperately so that I can read them separately as well. This is my code
function A= write(M)
fid=fopen('output.txt','a+');
for i = 1:size(M,1)
fprintf(fid,'%g\t',M(i,:));
fprintf(fid,'\n');
end
fclose(fid);
I have two arrays as follows.
a =
10 20 30
20 78 89
c =
1 3
4 7
6 89
10 98
I have stored them already in file. How to make them as separate instances so that when i read I can read the array I want and not just the entire file?

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回答（1 个）

Walter Roberson
Walter Roberson 2013-12-13
In text files, there is no way to avoid reading leading information -- in your example, no way to avoid reading the text corresponding to "a" if you are interested in "c".
Binary files, on the other hand, can be "jumped around in".

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