I need AFL to find trading ranges

[bunny]

Hello guys,
I need an AFL for identifying trading ranges. Any idea how to go about it? I have thought of some approaches such as:

• Comparison of change in moving averages of different periodicity at different intervals of time
• Use of ADX system
• Oscillators

Does anyone know of any readymade AFL for identifying a trading range?

Thank you,
-Bunny.