OPEN-SOURCE SCRIPT
Basic Supply & Demand Zones
This indicator draws horizontal supply and demand zones based on swing highs/lows (pivots), using a very simplified version of classic supply/demand zone logic:
Supply zones (red) → areas where strong selling supposedly happened
Demand zones (green) → areas where strong buying supposedly happened
Core logic breakdown
Pivot detection
pineph = ta.pivothigh(leftBars, rightBars) // looks for swing highs
pl = ta.pivotlow (leftBars, rightBars) // looks for swing lows
Typical default settings: leftBars = 5, rightBars = 3
→ A high must be higher than 5 bars before and 3 bars after to be considered a pivot high (and vice versa for lows).
How zones are created
When a pivot high is confirmed:
It looks at the candle body (open/close) of the bar rightBars positions back (usually the 3rd bar before current)
Creates a very thin box using only the body high/low of that candle
Box color: semi-transparent red
Extends rightward 50 bars (configurable)
→ Label "S" appears above it
When a pivot low is confirmed: same logic, but green box + "D" label below
Very important — zone height is extremely narrow
The zone height = |open - close| of the pivot candle body only
→ most real supply/demand traders would consider this too narrow (many prefer wick-to-wick or 50–100% extension of the move)
Mitigation (deletion) logic — the most useful part
Supply zone (red) → gets deleted as soon as price makes a high above the top of the box
Demand zone (green) → gets deleted as soon as price makes a low below the bottom of the box
This is a classic "mitigation" or "invalidated zone" rule — once price returns into the zone and breaks the opposite side → the zone is considered "used up".
Summary – What you actually see on chart
Red horizontal boxes appearing around recent swing highs (very thin = body only)
Green horizontal boxes appearing around recent swing lows (very thin)
Boxes extend ~50 bars to the right
When price later strongly breaks through a zone in the aggressive direction → box disappears
Tiny "S" and "D" labels (can be turned off)
Supply zones (red) → areas where strong selling supposedly happened
Demand zones (green) → areas where strong buying supposedly happened
Core logic breakdown
Pivot detection
pineph = ta.pivothigh(leftBars, rightBars) // looks for swing highs
pl = ta.pivotlow (leftBars, rightBars) // looks for swing lows
Typical default settings: leftBars = 5, rightBars = 3
→ A high must be higher than 5 bars before and 3 bars after to be considered a pivot high (and vice versa for lows).
How zones are created
When a pivot high is confirmed:
It looks at the candle body (open/close) of the bar rightBars positions back (usually the 3rd bar before current)
Creates a very thin box using only the body high/low of that candle
Box color: semi-transparent red
Extends rightward 50 bars (configurable)
→ Label "S" appears above it
When a pivot low is confirmed: same logic, but green box + "D" label below
Very important — zone height is extremely narrow
The zone height = |open - close| of the pivot candle body only
→ most real supply/demand traders would consider this too narrow (many prefer wick-to-wick or 50–100% extension of the move)
Mitigation (deletion) logic — the most useful part
Supply zone (red) → gets deleted as soon as price makes a high above the top of the box
Demand zone (green) → gets deleted as soon as price makes a low below the bottom of the box
This is a classic "mitigation" or "invalidated zone" rule — once price returns into the zone and breaks the opposite side → the zone is considered "used up".
Summary – What you actually see on chart
Red horizontal boxes appearing around recent swing highs (very thin = body only)
Green horizontal boxes appearing around recent swing lows (very thin)
Boxes extend ~50 bars to the right
When price later strongly breaks through a zone in the aggressive direction → box disappears
Tiny "S" and "D" labels (can be turned off)
Skrypt open-source
W zgodzie z duchem TradingView twórca tego skryptu udostępnił go jako open-source, aby użytkownicy mogli przejrzeć i zweryfikować jego działanie. Ukłony dla autora. Korzystanie jest bezpłatne, jednak ponowna publikacja kodu podlega naszym Zasadom serwisu.
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Informacje i publikacje nie stanowią i nie powinny być traktowane jako porady finansowe, inwestycyjne, tradingowe ani jakiekolwiek inne rekomendacje dostarczane lub zatwierdzone przez TradingView. Więcej informacji znajduje się w Warunkach użytkowania.
Skrypt open-source
W zgodzie z duchem TradingView twórca tego skryptu udostępnił go jako open-source, aby użytkownicy mogli przejrzeć i zweryfikować jego działanie. Ukłony dla autora. Korzystanie jest bezpłatne, jednak ponowna publikacja kodu podlega naszym Zasadom serwisu.
Wyłączenie odpowiedzialności
Informacje i publikacje nie stanowią i nie powinny być traktowane jako porady finansowe, inwestycyjne, tradingowe ani jakiekolwiek inne rekomendacje dostarczane lub zatwierdzone przez TradingView. Więcej informacji znajduje się w Warunkach użytkowania.