Suggestion for modifying code for combining matrices

I want to create matrix C, from matrix A and B.

 A = (r1 r2 r3)

 B=

 [r1 r2

 r3 r4

 r2 r1

 r5 r6

 r2 r3

 r3 r2

 r3 r1

 r1 r3]

 C=(s1 s2 s3)

s1, s2, s3 are row’s number in matrix B.

s1= bigger row’s number between r1 r2 and r2 r1

s2= bigger row’s number between r2 r3 and r3 r2

s3= bigger row’s number between r3 r1 and r1 r3

this is an example:

 A= [4 1 6]

 B= [4 1

 6 8

 1 6

 1 4

 6 1

 6 4

 4 6]

 C= [3 4 6]

I use the following code, but it gives me an error.

could you please help me with the code.

 [m,n] = size(A);

 Y1 = reshape(permute(cat(3,A,circshift(A,[0 -1])),[3,2,1]),2,[]); 

 Y2 = flip(Y1,1);

 Bp = permute(B,[2,3,1]);

 X = reshape(any([all(bsxfun(@eq,Y1,Bp));all(bsxfun(@eq,Y2,Bp))]),m*n,[])';

 C = reshape(max(bsxfun(@times,X,(1:size(B,1))')),[],m)'-1;

error:

 Error using bsxfun

 Requested 2x80310x80310 (12.0GB) array exceeds maximum array size preference. Creation of

 arrays greater than this limit may take a long time and cause MATLAB to become

 unresponsive. See array size limit or preference panel for more information.

 Error in untitle (line 81)

 X = reshape(any([all(bsxfun(@eq,Y1,Bp));all(bsxfun(@eq,Y2,Bp))]),m*n,[])';

[Stephen23]

Continuation of other questions:

http://www.mathworks.com/matlabcentral/answers/286773-combine-different-matrices-to-create-a-new-one

[Ali]

Okay,

But this is the code that I posted.

It does not work very well and it gives me the error that I mentioned.

Answer 1

[Andrei Bobrov]

Hi Ali! Please try it code:

[m,n] = size(A);
out = size([m,n]);
aa = permute(cat(3,A,circshift(A,[0 -1])),[2 3 1]);
for ii = 1:m
    for jj = 1:n
        a = aa(jj,:,ii);
        out(ii,jj) = max([find(ismember(B,a(end:-1:1),'rows'),1,'last'),...
                                             find(ismember(B,a,'rows'),1,'first')])-1;
    end
end

[Andrei Bobrov]

corrected.

[Ali]

Many thanks for the response.

your code produce C = [12 12 13]

But the correct answer is C = [3 4 6]

It would be appreciated if you could give me some help.

[Andrei Bobrov]

corrected

[Ali]

I really appreciate your help. But still gives the wrong answer.

your code:

 C = [3  2  1]

the correct answer:

 C = [3  4  6]

[Andrei Bobrov]

Hi Ali, corrected.

[Ali]

Hi Andrei Bobrov,

I really appreciate your help. thanks