How to compute the multiplication between matrix and matrix in different file

I have data that saves with different names such as data_1, data_2, etc...

data_1 will have a matrix A with dimension of 1140 x3201, data_2 will also have a matrix a with the same dimension as data_1 and of course, it has different number.

I want to calculate sum(sum(A(data_1).*A(data_2))), and then the next one would be sum(sum(A(data_2).*A(data_3))), etc..... Then put the answer together

 Let says I have 10 files ( data_1, data_2, ..data_10)

 Load the data file.

 count=1;

 for  j=1:10

 ss=strcat(path,data,'_',int2str(j),'.mat')

 load(ss);
  for i=1:1-j

 B(count)=sum(sum(A(:,:,i).*A(:,:,i+1)));

 count=count+1;

 end
 end

I could not get it to work. Can anyone give me an idea how to do so?

Thanks

Answer 1

[Star Strider]

I am not certain what you want to do, but correct this line to start:

B(count)=sum(sum(A(:,:,j).*A(:,:,j+1)));
                                ^
                          Inserted Comma

[Laura]

I saved matrix A under file name such as data_1, data_2, so on

What I want is to take the sum(sum(A(in the data_1).*A(in the data_2))), let say this answer is a

The next one is sum(sum(A(in the data_2).*A(in the data_3))) and this is b, so on.

then I want B=[a b, etc].

[Star Strider]

I have no idea what you are doing. Your description is too abstract for me to follow.