sub=ind2sub(arraysize,ind)
[j,k,l,..]=ind2sub(arraysize,ind)
Inputs  
arraysize 
The size of the array. 
ind 
An scalar integer index for the array. 
Outputs  
sub 
The vector of subscripts such that for any array x of size arrayszie , x[ind] and x[sub[1],sub[2],sub[3],...] are identical, being the
value of the same element in the array.

{j, k,..} 
The elements of the vector of subscripts (returned by the first form) such that for any array x of size arrayszie , x[ind] and x[j, k, l, ...] are identical, being the
value of the same element in the array.

>>a=rand(2,4,3) >>ind2sub(size(a),13) 1 3 2 >>a[13]==a[1,3,2] 1