ADX Avg. Directional Movement
Average Directional Movement is a momentum indicator developed by J. Welles Wilder. The ADX attempts to measure the extent to which a market is trending. This indicator measures the strength of the trend, regardless of direction; the higher the value, the stronger the trend.
The ADX can be used in conjunction with the Direction Indicator (+DI, -DI) to produce an complete trading system. This system consist of three rules: the Crossover Rule, the Extreme Point Rule, and the Turning Point Rule.