ADX (Average Directional Index)

ADX - A trend-strength indicator (Welles Wilder) that measures how strong a market trend is (regardless of direction). Values range 0–100 (typically, ADX >25 indicates a strong trend). In Forex robots, ADX is often used to filter trades (e.g. only trade when ADX is above a threshold). In MetaTrader, the built-in iADX() function (with iPlusDI/iMinusDI) provides ADX and its components. In cTrader/cAlgo, use Indicators.Adx(). Traders also look at ADX crossovers or use it to avoid choppy markets.