How to copy values from one array to empty array using 'for'?

I have an nx2-sized array. I want to move some values in that array to a new array (empty array) with 'for'. How do I do this? Thanks

[KSSV]

If you have indices idx of the array..you can copy them

iwant = myarray(idx,:) ;

[Merlyn Inova]

Thank you very much.