Note: Tested on cTrader Windows only.

LT_Ind_SRZones detects swing highs/lows, merges nearby swings into Support/Resistance zones, and keeps your chart focused on the most relevant levels around current price.

What it draws

• Zones: shaded bands built from merged swings
• Swing High/Low points
• ZigZag path for quick structure reading

Key Controls

• AutoPercentageMove (bool) + AutoPercentageMoveFactor (double)
  Auto-tunes swing sensitivity. Turn off to use PercentageMove manually.
• PercentageMove (double)
  Minimum move (as %) to form a swing when Auto is off.
• ZoneSizeFactor (double)
  Zone height = ZoneSizeFactor × ATR.
• NumSREach (int)
  How many top zones to keep above and below current price.
• ValidBars (int)
  Ignore swings older than this many bars.
• Color / Show styles
  Zone fill color (with alpha), Swing/ZZ styles.

Ordering & Filter Logic (how zones are chosen)

1. Collect swings from most recent backwards, only permanent ones and not older than ValidBars.
2. Count swings above and below current price (including those whose value falls inside half a zone). Stop when both sides reach NumSREach.
3. Fallback: if a side has no eligible swing, add one older swing for that side.
4. Merge: for each entitled swing, either merge into an existing zone (CanMerge) or create a new zone.
5. Rank & pick:
6. • Above price: sort zones by (High − price) ascending, then by MostRecentIndex descending; take NumSREach.
   • Below price: sort by (price − Low) ascending, then by MostRecentIndex descending; take NumSREach.
   • Union the two lists → final zones shown.

This keeps the display clean, nearby, and recent, while still handling edge cases.

Defaults

• AutoPercentageMove = true, AutoPercentageMoveFactor = 4
• PercentageMove = 1.0 (used when Auto = false)
• NumSREach = 1
• ValidBars = 240
• ZoneSizeFactor = 0.5 (zone height = 0.5 × ATR)
• Zone Color = #21FF33E0 (semi-transparent)
• Swing High = #FFFF999A, Swing Low = #FF99DFF9, ZigZag = Blue (Dots)

Use Cases

• Mark nearby S/R zones for entries, partials, or stops
• Watch zone flips (support → resistance and vice versa)
• Combine with VWAP/Pivots for confluence

Works on any symbol and timeframe. Lightweight and ready for live trading or backtests.