Two lines that measure upward and downward movement separately.
VI+ measures the distance from today's high to yesterday's low, VI− the other way around, both divided by the true range. A crossing marks a change of direction.
Worked out by the same code the builder uses, on stored daily candles. Move a setting and the line moves with it. This is what happened, not what will happen.
Entry: Vortex +DI crosses above Vortex −DI.
In a range the two lines cross over and over; use a volatility or trend gate.
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