regarding Honeycutt-Andersen pair index

Dear All;

I want to calculate the honeycutt-andersen index and count the number of pair let’s say 1551 (or whatever). I have studied what compute cna/atom does. Is there any way to count the number of certain pairs and not just the BCC or amorphous like pairs? Thanks in advance.

It is not clear to me what you are asking. You likely will have to program your own compute, but the question is what defines the certain pairs tounwnst to count.