Quote from syswizard:
This doesn't make sense at all. Daily range data, especially including "gaps" outside of the trading day is not a good proxy for movement "potential" intraday. For instance an index can go straight up all day, low to high, for 8 points. Another index could go up 6, down 4, up 6, and then down 5. Same intraday range...BUT nearly 2.5 times the "movement".
Understand. Not an issue for my currency trading strategy, as it is designed to capture, and often does, the bulk of the intraday range, from the European open at 1 am ET until London close at 12 noon or slightly later. Your point is somewhat more relevant for my metals strategies, but details will have to wait until another time.
If one wanted to trade more frequently, then something like MT4's ZigZag indicator would be more suitable, applied to whatever time frame of interest, e.g., hourly, 15M, etc.