aroon_up

Measures the time since the highest high occurred, expressed as a percentage. High values indicate recent new highs (strong uptrend).

Parameters

• period (int): Number of periods to look back for highest high
• Common values: 25 (standard), 14, 50

Formula

Aroon Up = ((period - bars_since_highest_high) / period) * 100

Where:
- bars_since_highest_high = Number of bars since period high
- Result ranges from 0 to 100

Examples

aroon_up(25);  # Standard 25-period Aroon Up
aroon_up(14);  # Shorter period (more sensitive)
aroon_up(25) > 70;  # Strong uptrend (recent highs)

Returns

Aroon Up value ranging from 0 (high occurred period bars ago) to 100 (new high today)

Notes

• Values 70-100 indicate strong uptrend (recent highs)
• Values 0-30 indicate weak uptrend (no recent highs)
• Use with Aroon Down for crossover signals