I have never heard anything about relating height to rod length. I think its all about the environment your fishing and maybe physical strength, but not sure on the later. I am 6'2", I use a light 7'6" rod for small forest streams, because of the trees above. I use a fast 9' #5 rod on open lakes and big rivers. I use my 10' 4# for tail waters (drys, larva/pupa and emergers). A girl I fish with is like 5' 6" and she can cast 70 feet all day , she always has a 9' fast action rod in her hands. (behave pervs)

I think it all comes down to personal casting ability/style. Try out several rods until you find something you like, then try to understand why you like it. As with anything the more you practice the better you get. then your rod preferences may change. Not everything comes down to rules or science, sometimes thing just feel right.
I sure one of the pro's will come along shortly and give you a better answer.
hope that helps a bit...