Proble Saving a Binary File

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

Answer 1

[Walter Roberson]

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