Convert data to binary and ASCII format

If the variable

a=[3 2 1; 1 2 3; 2 3 1]

b=[1 2 3; 4 6 7; 5 3 5]

c=[a*b]

How to I save each variable as binary format and ASCII format?

[sixwwwwww]

In how many bits you will like to represent a binary number?

Answer 1

[sixwwwwww]

You can do it as follow:

a = [3 2 1; 1 2 3; 2 3 1];
dec2bin(a) % decimal to binary conversion
b = double(num2str(a)) % decimal to ASCII conversion

[Darren]

Thanks. But I just realized my coursework matrix have a negative integer in the matrix. And there's an error when I try to convert it to binary format using your method.

Eg

a=[-3 2 1; -1 2 3; 2 -3 1]

How do I convert to binary format in this kind of situation?? And 1 more thing, how do I save the converted format to disk at the end of the program?

[Walter Roberson]

There are three different "standards" for converting negative integers. You need to decide which one you are going to use: sign bit, one's complement, or two's complement.

You can save the converted to disk using fprintf() or fwrite(); or you can use save(); or you can use one of the higher level routines such as csvwrite() or dlmwrite() or xlswrite().

[Darren]

I get the saving to disk part but I don't understand sign bit, one's complement, or two's complement as I never heard or learn about them before.

Can you give me an example of how to convert a=[-3 2 1; -1 2 3; 2 -3 1] into binary format using signbit, one's complement or two's complement?

[Walter Roberson]

http://en.wikipedia.org/wiki/Signed_number_representations

[Walter Roberson]

Have you decided yet which representation you are going to use ?