finding nearest distance of a distinct value

Hi, suppose I have a matrix as follows:

I =

     1     1     5     1     1     1     8
     1     1     1     1     1     1     1
     1     1     1     1     1     1     1
     1     1     5     2     1     1     1
     1     1     1     1     1     5     1
     1     1     1     1     1     1     1

I(3,4) is 1 . I need to know the distance and position of nearest 5 of this matrix from this 1. How to do this easily?Thanks in advance.

Answer 1

[Andrei Bobrov]

EDIT

[Hi Hj] = find(I~=1);
d = [Hi Hj I(I~=1) sqrt(sum(bsxfun(@minus,[Hi Hj],[3 4]).^2,2))];
ds = sortrows(d,4);
d5 = ds(ds(:,3)==5,:);
out = d5(1,:)

more

[Hi Hj] = find(I==5);
d = [Hi Hj  sqrt(sum(bsxfun(@minus,[Hi Hj],[3 4]).^2,2))];
[~,jj] = min(d(:,3));
out = d(jj,:)