volume Pattern extremum

This Pine Script indicator detects potential local tops/bottoms when price makes a strong move on relatively low aggregated volume + long rejection wick.
Core logic in brief:
• Calculates z-scores for:
• Price (average of high/close/low)
• Combined volume (spot + perp)
• Signal conditions:
• Strong price impulse: z_price > +1.5 (top) or < –1.5 (bottom)
• Volume not extreme: z_volume < +1.0 (relatively low/normal)
• Candle has long wick: ≥70% of range (upper for top, lower for bottom)
• Plots small white triangles above (potential top) / below (potential bottom)
Main idea:
Significant price rejection on not very high volume with clear wick structure — often a sign of exhaustion, trap or weak move that may reverse.