I can't find the actual algorithm to calculate this. I've found a few systems that do well in a backtesting environment and don't understand the mechanics of what's going on cuzz I can't find the "formula" for this anywhere. Anybody know where I can find this easily (preferably w/o buying a book)?
Easy? No. But you can get a copy of Wilder's New Concepts in Technical Trading Systems via interlibary loan (Amazon has the publication details). It has all the details on ADX, DMI, RSI, SAR, etc.
Here's one from the web site of the program I use, Linnsoft's IRT. http://www.linnsoft.com/tour/techind/adx.htm jd