Which is the simplest way to create neighbourhood pairs?

from [1,2,3,7,8,9] to [1 2; 2 3; 3 7; 7 8; 8 9]

Answer 1

[Radha Krishna Maddukuri]

I hope this helps.

B = zeros(numel(A)-1,2);
for i =1:1:(numel(A)-1)
   B(i,:) = [A(i) A(i+1)];
end

Answer 2

[Andrei Bobrov]

hankel(a(1:end-1),a(end-1:end))

or

[a(1:end-1)', a(1:end-1)'+1]

or

a1 = a(1:end-1)
bsxfun(@plus,a1(:),[0 1])