I am trying to figure out how best to go about this:

I have a set of columns (A) that correspond with locations, each of which contain unique identification codes, and another set of columns(B) that contain codes from transects from within A’s locations.

I want to be able to see if the codes in B have strayed from their original A-locations and where they are now. I will most likely end up lumping my transects together so they end up in columns of the same location names as set A, but was interested to see if there’s a way to see movement with the transects and/or whole locations.

Hopefully that makes sense…

I have a basic understanding of R, but still haven’t learned what a lot of the fuctions or actions are actually called, so asking for help is even more difficult. Any help would be greatly appreciated.
-S