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Proble Saving a Binary File

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Shani Gal
Shani Gal 2012-6-29
关闭： MATLAB Answer Bot 2021-8-20
Hi
I am trying to save my matlab variables in binary files, unsuccessfully.
For example, if I have
A=[1,1,1;2,2,2] and I save it as ascii file:
save('test_file.txt','A','-ASCII')
I have no problem loading and reading it:
A=load('test_file.txt','A','-ASCII') And getting A back
A =
1 1 1
2 2 2
And accessing part of it ( for example B=A(1,1))
But if I try to save it as binary or matlab format
save('test_file.mat','A')
when I load it, I get
A=load('test_file.mat','A')
A =
A: [2x3 double]
And I can’t access the values in it.
Why?
Thanks
Shani

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回答（1 个）

Walter Roberson
Walter Roberson 2012-6-29
When you assign the output of load() of a .mat file, the result is a structure variable with fields that are the name of the variables that were loaded. You loaded variable 'A' so there will be a field named 'A' in the variable you assigned the output to, which happens to be 'A', so your actual data will be in A.A

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