Call matrix for multiplication

I have 12 matrix: p1................p12.

these are loaded in matlab.

I wish to do p1'*P1 then p1'*p2 .......P1'*p12.

Then reapeat with p2: p2'*p3 ...........p2'*p12.

I wish to cinstruct a loop

for i=1:12

for j=i:12

pp(:,:,j)=Pi ?????????*Pj??????????

 would you please let me know , how i can call pi and pj
 regards

Answer 1

[Andrei Bobrov]

% 1. Your matrices (p1 .. p12):

for j1 = 1:12
   eval(['p',num2str(j1),' = randi(10,3,4)']);
end

% 2. Solution:

p = eval(['{',sprintf('p%d,',(1:12)'),'}']);
n = nchoosek(1:12,2);
pp = zeros([size(p{1},2)*[1 1],size(n,1)]);
for j1 = 1:size(n,1)
    pp(:,:,j1) = p{n(j1,1)}'*p{n(j1,2)};
end

Answer 2

[Walter Roberson]

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

Answer 3

[Azzi Abdelmalek]

   n=3;m=6;
   for k = 1:12
     p{k} = rand(n,m)
   end
   ind = nchoosek(1:12,2);pp=cell2mat(p(ind));
   for k=1:n:size(pp,1)
     result(:,:,(k+n-1)/n)=pp(k:k+n-1,1:m)'*pp(k:k+n-1,m+1:2*m)
   end

[Fariba]

I have find a soultion as following: for k=1:12 % load(['G:\......\G',num2str(k),'.txt']); f(:,:,k)=load(['G:\.......\G',num2str(k),'.txt']); end Thank you for all.

[Azzi Abdelmalek]

how is that related to your question?