for look and store in a 2x2 matrix

Hi,

I have this for loop and it's working fine. But the output (A) is a 2x2 matrix. How can i store the outputs in A1,A2....A183 like for all i's in the loop.

for i=122:1:305
    A=DamithCount(S1(i,:),S1(i+1,:));
end

Thanks in advance for help.

Answer 1

[Matt J]

This will store them in slices A(:,:,1), A(:,:,2), ...A(:,:,184) of a 3D array, a much better data organization than A1,...,A184.

for i=122:305
    A(:,:,i-121)=DamithCount(S1(i,:),S1(i+1,:));
end

[Damith]

Thanks a lot. it worked.

[Damith]

Hi Matt,

I am trying to access the 4 elements in A(:,:,1) upto A(:,:,184). For example if I want to sum the 1,1 and 2,1, how can I do that. I need to do the same for 1,2 and 2,2.

Please let me know.

Thanks.

[Image Analyst]

How is that 4 elements instead of 184 elements? And why are you giving only two 2-D coordinates instead of four 3-D coordinates?

By the way, you might need to use squeeze().

[Matt J]

@Damith,

If you mean you want to sum across slices, you would simply do

 Asum=sum(A,3)

Note how much harder this would have been if you had stored in separate matrices A1,...A184 !

Answer 2

[Sara]

for i = 122:305

      assignin('base',['A',num2str(i)],DamithCount(S1(i,:),S1(i+1,:)));

end

Look up assignin to be sure to use the right workspace.

[Matt J]

Don't do this!!!

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F