I've only actually observed about five downvotes here, but I lost multiple XP points on this one leading me to think there have been more. In any case, I'd be happy to lose more points yet if only I might find a solution. Did you look at the math in the article you linked? I think maybe you didn't see it. You have to click on the images to display them--they're the kind of derivatives and integrations that one usually meets in a calculus class. I don't remember how to do them. If that's easy math for you, you're well above my league, and my hat's off to you. There are times when I've considered hiring a programmer, but have no idea how to go about it or whom to trust. And I'm on a low budget. Very low. Presently, I'm unemployed--ever since the latter part of last year on account of COVID-related circumstances. And I was essentially a volunteer (low pay) for years prior to that in a third-world country. No, if I want to get something done with this project that will benefit others, I must just plug away at it with 120% of my ability. I really do appreciate perlmonks.org. The folk here, like yourself, have been so very helpful, on multiple occasions, and I am grateful.