====== Forex - Indicators - ADX (Average Directional Index) ======

A Trend Strength Indicator, how strong a trend is.

The indicator is based on a moving average of price range expansion over a given period of time.

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Comprises three lines:

  * Positive directional indicator +DI;
  * Negative direction indicator -DI;
  * The ADX itself.


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===== Buy =====

A Buy signal (in an uptrend) is generated when +DI rises above -DI.

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===== Sell =====

A Sell signal (in a downtrend) is generated when -DI rises above +DI.

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Both signals are valid only if the ADX itself is rising, which indicates the presence of a trend.

And if the ADX is falling, it's time to think about profit-taking.