Support/Resistance & Liquidity Z…: Free TradingView Indicator (Pine Script)

Add It to Your TradingView Chart

1Copy the scriptPress Copy script above, or the copy button on the code below.
2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.

Source Code

242 lines of Pine Script v6 from main.pine, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.

main.pine

// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © PlasmaZero

//@version=6
indicator("Support/Resistance & Liquidity Zones", overlay = true, max_lines_count = 500, max_boxes_count = 500)

// Inputs
leftBars   = input.int(5,  "Pivot Left Bars",  minval = 1, maxval = 20, group = "Pivot Settings")
rightBars  = input.int(5,  "Pivot Right Bars", minval = 1, maxval = 20, group = "Pivot Settings")
maxLevels  = input.int(5,  "Max Levels to Show", minval = 1, maxval = 20, group = "Pivot Settings")
lookback   = input.int(100, "Lookback Period (bars)", minval = 20, maxval = 500, group = "Pivot Settings")
extendBars = input.int(50,  "Extend Zones Right (bars)", minval = 10, maxval = 200, group = "Pivot Settings")

showSupport    = input.bool(true,  "Show Support Zones (S)", group = "Display")
showResistance = input.bool(true,  "Show Resistance Zones (R)", group = "Display")
showLiquidity  = input.bool(true,  "Show Liquidity Zones (L)", group = "Display")
showLabels     = input.bool(true,  "Show Zone Labels", group = "Display")
showStrength   = input.bool(true,  "Show Level Strength", group = "Display")

volThreshold   = input.int(150,    "Volume Threshold %", minval = 100, maxval = 300, group = "Liquidity")
zoneWidth      = input.float(0.5,  "Zone Width %", minval = 0.1, maxval = 5.0, group = "Liquidity")

supColor       = input.color(color.new(color.green, 80), "Support Zone", group = "Colors")
resColor       = input.color(color.new(color.red, 80),   "Resistance Zone", group = "Colors")
liqColor       = input.color(color.new(color.blue, 85),  "Liquidity Zone", group = "Colors")

// Pivot detection
ph = ta.pivothigh(high, leftBars, rightBars)
pl = ta.pivotlow(low,  leftBars, rightBars)

// Volume stuff
avgVol = ta.sma(volume, 20)
highVol = volume > avgVol * (volThreshold / 100)

// Storage arrays
var box[] resBoxes = array.new_box()
var box[] supBoxes = array.new_box()
var box[] liqBoxes = array.new_box()

var label[] resLabels = array.new_label()
var label[] supLabels = array.new_label()
var label[] liqLabels = array.new_label()

var float[] resLevels = array.new_float()
var float[] supLevels = array.new_float()
var int[]   resTouches = array.new_int()
var int[]   supTouches = array.new_int()

// Helper functions
getStrength(touches) =>
    touches <= 2 ? "●" : touches <= 4 ? "●●" : "●●●"

nearLevel(price, level, tolerance) =>
    math.abs(price - level) / level < tolerance / 100

// Check if new pivot matches an existing level
findExistingLevel(levels, newLevel, tolerance) =>
    int foundIdx = -1
    if array.size(levels) > 0
        for i = 0 to array.size(levels) - 1
            if nearLevel(newLevel, array.get(levels, i), tolerance)
                foundIdx := i
                break
    foundIdx

// Resistance zones
if showResistance and not na(ph)
    int   x  = bar_index - rightBars
    float y  = ph
    float y2 = y * (1 + zoneWidth / 100)
    
    // Only track recent pivots
    if bar_index - x <= lookback
        existingIdx = findExistingLevel(resLevels, y, zoneWidth * 2)
        
        if existingIdx >= 0
            // Update the existing level
            currentTouches = array.get(resTouches, existingIdx)
            array.set(resTouches, existingIdx, currentTouches + 1)
            
            // Update label with new strength
            if showLabels and array.size(resLabels) > existingIdx
                oldLabel = array.get(resLabels, existingIdx)
                label.delete(oldLabel)
                
                labelText = "R"
                if showStrength
                    labelText := labelText + " " + getStrength(currentTouches + 1)
                
                newLabel = label.new(
                     x = bar_index,
                     y = array.get(resLevels, existingIdx),
                     text = labelText,
                     style = label.style_label_down,
                     color = color.new(color.red, 30),
                     textcolor = color.white,
                     size = size.small
                 )
                array.set(resLabels, existingIdx, newLabel)
        else
            // New level - check if it's a liquidity zone
            isLiqZone = highVol and showLiquidity
            
            box b = box.new(
                 left   = x,
                 top    = y2,
                 right  = bar_index + extendBars,
                 bottom = y,
                 bgcolor = isLiqZone ? liqColor : resColor,
                 border_color = isLiqZone ? color.new(color.blue, 40) : color.new(color.red, 40),
                 border_width = isLiqZone ? 2 : 1
             )
            array.push(isLiqZone ? liqBoxes : resBoxes, b)
            
            array.push(resLevels, y)
            array.push(resTouches, 1)
            
            if showLabels
                labelText = isLiqZone ? "L" : "R"
                if showStrength
                    labelText := labelText + " " + getStrength(1)
                
                lbl = label.new(
                     x = bar_index,
                     y = y,
                     text = labelText,
                     style = label.style_label_down,
                     color = isLiqZone ? color.new(color.blue, 30) : color.new(color.red, 30),
                     textcolor = color.white,
                     size = size.small
                 )
                array.push(isLiqZone ? liqLabels : resLabels, lbl)
            
            // Clean up old zones
            if array.size(isLiqZone ? liqBoxes : resBoxes) > maxLevels
                box old = array.shift(isLiqZone ? liqBoxes : resBoxes)
                box.delete(old)
                array.shift(resLevels)
                array.shift(resTouches)
                if showLabels
                    label oldLbl = array.shift(isLiqZone ? liqLabels : resLabels)
                    label.delete(oldLbl)

// Support zones
if showSupport and not na(pl)
    int   x  = bar_index - rightBars
    float y  = pl
    float y2 = y * (1 - zoneWidth / 100)
    
    // Only track recent pivots
    if bar_index - x <= lookback
        existingIdx = findExistingLevel(supLevels, y, zoneWidth * 2)
        
        if existingIdx >= 0
            // Update the existing level
            currentTouches = array.get(supTouches, existingIdx)
            array.set(supTouches, existingIdx, currentTouches + 1)
            
            // Update label with new strength
            if showLabels and array.size(supLabels) > existingIdx
                oldLabel = array.get(supLabels, existingIdx)
                label.delete(oldLabel)
                
                labelText = "S"
                if showStrength
                    labelText := labelText + " " + getStrength(currentTouches + 1)
                
                newLabel = label.new(
                     x = bar_index,
                     y = array.get(supLevels, existingIdx),
                     text = labelText,
                     style = label.style_label_up,
                     color = color.new(color.green, 30),
                     textcolor = color.white,
                     size = size.small
                 )
                array.set(supLabels, existingIdx, newLabel)
        else
            // New level - check if it's a liquidity zone
            isLiqZone = highVol and showLiquidity
            
            box b = box.new(
                 left   = x,
                 top    = y,
                 right  = bar_index + extendBars,
                 bottom = y2,
                 bgcolor = isLiqZone ? liqColor : supColor,
                 border_color = isLiqZone ? color.new(color.blue, 40) : color.new(color.green, 40),
                 border_width = isLiqZone ? 2 : 1
             )
            array.push(isLiqZone ? liqBoxes : supBoxes, b)
            
            array.push(supLevels, y)
            array.push(supTouches, 1)
            
            if showLabels
                labelText = isLiqZone ? "L" : "S"
                if showStrength
                    labelText := labelText + " " + getStrength(1)
                
                lbl = label.new(
                     x = bar_index,
                     y = y,
                     text = labelText,
                     style = label.style_label_up,
                     color = isLiqZone ? color.new(color.blue, 30) : color.new(color.green, 30),
                     textcolor = color.white,
                     size = size.small
                 )
                array.push(isLiqZone ? liqLabels : supLabels, lbl)
            
            // Clean up old zones
            if array.size(isLiqZone ? liqBoxes : supBoxes) > maxLevels
                box old = array.shift(isLiqZone ? liqBoxes : supBoxes)
                box.delete(old)
                array.shift(supLevels)
                array.shift(supTouches)
                if showLabels
                    label oldLbl = array.shift(isLiqZone ? liqLabels : supLabels)
                    label.delete(oldLbl)

// Pivot markers
plotshape(not na(ph) and showResistance, 
     title = "Pivot High",
     style = shape.triangledown, 
     location = location.abovebar,
     color = color.new(color.red, 20), 
     size = size.tiny)

plotshape(not na(pl) and showSupport, 
     title = "Pivot Low",
     style = shape.triangleup, 
     location = location.belowbar,
     color = color.new(color.green, 20), 
     size = size.tiny)

// Alerts
breakResistance = ta.crossover(close, ta.highest(high, 20))
breakSupport = ta.crossunder(close, ta.lowest(low, 20))

alertcondition(breakResistance, "Resistance Break", "Price broke resistance level")
alertcondition(breakSupport, "Support Break", "Price broke support level")

Overview

Repeated touches of a level raise a strength rating shown as dots. High-volume bars, measured against a 20-bar average with a percentage threshold, create liquidity zones. Zone width, lookback, how far boxes extend right, the number of levels and the colours are adjustable. Pivots confirm after the right bars have formed.

Pivot-based support and resistance boxes
Level strength from repeated touches
High-volume liquidity zones
Adjustable lookback, width and level count

Details

Published by

PlasmaZero on GitHub

Type

Indicator, Pine Script v6

Draws

On the price chart

Markets

Any symbol

Timeframes

Any timeframe

Risk Notes

No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.

File

main.pine

Repository

github.com/PlasmaZero/Support-and-Resistance-Indicator

Settings

The inputs you can change from the gear icon on the chart. Defaults are the author's.

Setting	Type	Default	Variable
Pivot Left Bars	`int`	`5`	`leftBars`
Pivot Right Bars	`int`	`5`	`rightBars`
Max Levels to Show	`int`	`5`	`maxLevels`
Lookback Period (bars)	`int`	`100`	`lookback`
Extend Zones Right (bars)	`int`	`50`	`extendBars`
Show Support Zones (S)	`bool`	`true`	`showSupport`
Show Resistance Zones (R)	`bool`	`true`	`showResistance`
Show Liquidity Zones (L)	`bool`	`true`	`showLiquidity`
Show Zone Labels	`bool`	`true`	`showLabels`
Show Level Strength	`bool`	`true`	`showStrength`
Volume Threshold %	`int`	`150`	`volThreshold`
Zone Width %	`float`	`0.5`	`zoneWidth`

Show all 15 settings

Setting	Type	Default	Variable
Support Zone	`color`	`color.new(color.green, 80)`	`supColor`
Resistance Zone	`color`	`color.new(color.red, 80)`	`resColor`
Liquidity Zone	`color`	`color.new(color.blue, 85)`	`liqColor`

Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.

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