ADX doesn't hold up in backtesting in my experience. It has to be fit to the data which makes it useless for future use.
hello "Blueberrycake " "calculate the number of inflection points (changes of slope from positive to negative and vice versa) over some historical time period. The more inflection points you have, the choppier the instrument in this particular timeframe" >>it's a simple, but good idea. have you code this in EL, or do you use-it in a discretionnary mode, by "eyeballing" charts? another good choppyness indicator is "Bandwith" from Bollinger Bands. Thank's