elemental subtraction indices of initial vector

Hi !

A is my array of numbers

I substract all the elements from each other with A - A' which give me a matrice T with size of length (A) * length (A)

Now that I want to look for specific value in this matrice, find (T == x) it gives me the indices of the value in the matrice.

My question is how can I find out what this indece represents in form of my initial array A?

in short :::

T = A - A '

find (T == my value) ==> ans = i where T (i) == my value

how to find out j and k where T (i) = A (j) - A (k)

Thanks in advance!

Answer 1

[KSSV]

A = [1 2 1 2 2 3 4 5] ;
T = A-A.' ; 
x = 0 ; 
idx = T == x ; % get logical indices 
[r,c] = ind2sub(size(T),find(idx))  % get row and column positions 

[Mahla Bakhshi]

awesome! thanks!

Answer 2

[madhan ravi]

 [r, c] = find(T == myvalue)