Support and Resistance (k): 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

176 lines of Pine Script v4 from Supply and Demand/Support and Resistance kaleboraciy.txt, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.

Support and Resistance kaleboraciy.txt

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © kaleboraciy

//@version=4
study("Support & Ressistance (k)", overlay = true, max_lines_count = 500, max_labels_count = 500)

mode_auto_TF = input(title="Auto Timeframe to Assess ?", defval='Manual', options=['Auto', 'Manual'])
res = input(title="resolution (if manual)", defval="", type=input.resolution)
//pivot_len = input(20, title = 'Pivot Points Length', type = input.integer)
mode_auto_len = input(title="Auto Pivot Length ?", defval='Auto', options=['Auto', 'Manual'])
_pivot_len = input(20, title = 'Pivot Points Length', type = input.integer)
//inacc = input(0.5, title = 'Inaccuracy', type = input.float, step = 0.1) / 100 * close
mode_auto_inacc= input(title="Auto Inaccuracy ?", defval='Auto', options=['Auto', 'Manual'])
_inacc = input(0.5, title = 'Inaccuracy', type = input.float, step = 0.1) / 100 * close 
width = input(12, title = 'Linewidth')
width2 = input(8, title = 'Linewidth of broken line')
show_broken = input(true, title = 'Сontinue broken lines?')
start = input(timestamp("2021-01-01"), type = input.time, title = 'Start calculations from')

time_cond = time >= start

auto_tf = timeframe.period == 'M' ? 'Y' : timeframe.period == 'W' ? 'M' : 
   timeframe.period == 'D' ? '2D' : timeframe.period == '360' ? 'D' : 
   timeframe.period == '240' ? 'D' : timeframe.period == '195' ? 'D' : 
   timeframe.period == '120' ? '240' : timeframe.period == '78' ? '120' : 
   timeframe.period == '60' ? '120' : timeframe.period == '45' ? '120' : 
   timeframe.period == '39' ? '60' : timeframe.period == '30' ? '60' : 
   timeframe.period == '20' ? '30' : timeframe.period == '15' ? '30' : timeframe.period == '10' ? '30' : 
   timeframe.period == '5' ? '15' : timeframe.period == '3' ? '15' : 
   timeframe.period == '2' ? '15' : timeframe.period == '1' ? '15' : '30'
   
_res = mode_auto_TF == 'Auto' ? auto_tf : res

auto_len= timeframe.period == 'M' ? 2 : timeframe.period == 'W' ? 2 : 
   timeframe.period == 'D' ? 2 : timeframe.period == '360' ? 2 : 
   timeframe.period == '240' ? 5 : timeframe.period == '195' ? 5 : 
   timeframe.period == '120' ? 8 : timeframe.period == '78' ? 10 : 
   timeframe.period == '60' ? 10 : timeframe.period == '45' ? 10 : 
   timeframe.period == '39' ? 10 : timeframe.period == '30' ? 10 : 
   timeframe.period == '20' ? 10 : timeframe.period == '15' ? 10 : timeframe.period == '10' ? 10 : 
   timeframe.period == '5' ? 10  : _pivot_len 
   
pivot_len = mode_auto_len == 'Auto' ? auto_len : _pivot_len

auto_inacc= timeframe.period == 'M' ? 4 : timeframe.period == 'W' ? 4 : 
   timeframe.period == 'D' ? 1 : timeframe.period == '360' ? 1 : 
   timeframe.period == '240' ? 1.0 : timeframe.period == '195' ? 1.0 : 
   timeframe.period == '120' ? 0.5 : timeframe.period == '78' ? 0.5 : 
   timeframe.period == '60' ? 0.5 : timeframe.period == '45' ? 0.5 : 
   timeframe.period == '39' ? 0.5 : timeframe.period == '30' ? 0.5: 
   timeframe.period == '20' ? 0.5: timeframe.period == '15' ? 0.5 : timeframe.period == '10' ? 0.5 : 
   timeframe.period == '5' ? 0.5 : _inacc 
   
inacc = mode_auto_inacc == 'Auto' ? auto_inacc/100*close : _inacc

hi = security(syminfo.tickerid, _res, high)
lo = security(syminfo.tickerid, _res, low)

max_bars_back(hi, 500)
max_bars_back(lo, 500)

//ph = pivothigh(high, pivot_len, pivot_len) 
//pl = pivotlow(low, pivot_len, pivot_len)

ph = pivothigh(hi, pivot_len, pivot_len) 
pl = pivotlow(lo, pivot_len, pivot_len)


f_crossing_level_up(sr, r) =>
    //(r > sr and r < sr[1])
    (r < sr and r > sr[1])
    
f_crossing_level_down(sr, r) =>
    //(r < sr and r > sr[1])
    (r > sr and r < sr[1])


var lines_upper = array.new_line(1)
var lines_lower = array.new_line(1)

if array.size(lines_upper) > 500
    array.shift(lines_upper)
    
if array.size(lines_lower) > 500
    array.shift(lines_lower)

// deleting bad levels

k = 0

for i = 0 to array.size(lines_upper) - 1
    line_price = line.get_y2(array.get(lines_upper, i - k))
    if high - inacc > line_price
        x1 = line.get_x1(array.get(lines_upper, i - k))
        x2 = line.get_x2(array.get(lines_upper, i - k))
        
        
        y1 = line.get_y1(array.get(lines_upper, i - k))
        
        if x1 != x2
            line.new(x1, y1, bar_index, y1, extend = extend.none, color = color.new(color.green, 60), width = width)
            line.set_x2(array.get(lines_upper, i - k), bar_index)
            //alert("Green level at "+ tostring(y1) + " has broken!", freq = alert.freq_once_per_bar)
            if f_crossing_level_up(close, y1)
                alert("SR (kaleboraciy): " + syminfo.ticker + " Green level at "+ tostring(y1) + " has crossed up! " + timeframe.period, freq = alert.freq_once_per_bar)
            else
                if f_crossing_level_down(close, y1)
                    alert("SR (kaleboraciy): " + syminfo.ticker + " Green level at "+ tostring(y1) + " has crossed down! " + timeframe.period, freq = alert.freq_once_per_bar)
            if show_broken
                line.new(time_close[1], y1, time_close + 1, y1, extend = extend.right, color = color.new(color.aqua, 85), width = width2, xloc = xloc.bar_time)
            
        line.delete(array.get(lines_upper, i - k))
        array.remove(lines_upper, i - k)
        
        k := k + 1
        
k := 0
        
for i = 0 to array.size(lines_lower) - 1
    line_price = line.get_y2(array.get(lines_lower, i - k))
    if low + inacc < line_price
        x1 = line.get_x1(array.get(lines_lower, i - k))
        x2 = line.get_x2(array.get(lines_lower, i - k))
        
        
        y1 = line.get_y1(array.get(lines_lower, i - k))
        
        if x1 != x2
            line.new(x1, y1, bar_index, y1, extend = extend.none, color = color.new(color.red, 60), width = width)
            line.set_x2(array.get(lines_lower, i - k), bar_index)
            //alert("Red level at "+ tostring(y1) + " has broken!", freq = alert.freq_once_per_bar)
            if f_crossing_level_up(close, y1)
                alert("SR (kaleboraciy): " + syminfo.ticker + " Red level at "+ tostring(y1) + " has crossed up! " + timeframe.period, freq = alert.freq_once_per_bar)
            else
                if f_crossing_level_down(close, y1)
                    alert("SR (kaleboraciy): " + syminfo.ticker + " Red level at "+ tostring(y1) + " has crossed down! " + timeframe.period, freq = alert.freq_once_per_bar)
            if show_broken
                line.new(time_close[1], y1, time_close + 1, y1, extend = extend.right, color = color.new(color.orange, 85), width = width2, xloc = xloc.bar_time)
            
        line.delete(array.get(lines_lower, i - k))
        array.remove(lines_lower, i - k)
        
        k := k + 1
        

    
if ph and time_cond
    bool flag = false
    for i = 0 to array.size(lines_upper) - 1
        line_price = line.get_y2(array.get(lines_upper, i))
        if ph >= line_price - inacc and ph <= line_price + inacc
            flag := true
            line.set_color(array.get(lines_upper, i), color.new(color.green, 60))
            line.set_x2(array.get(lines_upper, i), bar_index)
    if not flag
        array.push(lines_upper, line.new(bar_index[pivot_len], ph, bar_index[pivot_len], ph, color = na, extend = extend.right, width = width))
    
if pl and time_cond
    bool flag = false
    for i = 0 to array.size(lines_lower) - 1
        line_price = line.get_y2(array.get(lines_lower, i))
        if pl >= line_price - inacc and pl <= line_price + inacc
            flag := true
            line.set_color(array.get(lines_lower, i), color.new(color.red, 60))
            line.set_x2(array.get(lines_lower, i), bar_index)
    if not flag
        array.push(lines_lower, line.new(bar_index[pivot_len], pl, bar_index[pivot_len], pl, color = na, extend = extend.right, width = width))




            
// plot(array.size(lines_upper))

// plot(ph)
// plot(pl)

Overview

The pivot length, the accuracy tolerance and the timeframe used for assessment can each be automatic or manual. Line widths for active and broken lines can be set, broken lines can continue to be drawn, and a start date limits how far back calculation begins. It marks levels only and has no entries, exits or stops.

Pivot-based support and resistance lines
Automatic or manual pivot length and timeframe
Separate styling for broken lines
Start date for calculation

Details

Published by

mikeyhu70 on GitHub

Code credit

kaleboraciy, as written in the script's header

Type

Indicator, Pine Script v4

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

Supply and Demand/Support and Resistance kaleboraciy.txt

Repository

github.com/mikeyhu70/Tradingview. See its other scripts in the library

Settings

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

Setting	Type	Default	Variable
Auto Timeframe to Assess ?	`string`	`Manual`	`mode_auto_TF`
resolution (if manual)	`timeframe`		`res`
Auto Pivot Length ?	`string`	`Auto`	`mode_auto_len`
Pivot Points Length	`int`	`20`	`_pivot_len`
Auto Inaccuracy ?	`string`	`Auto`	`mode_auto_inacc`
Inaccuracy	`float`	`0.5`	`_inacc`
Linewidth	`int`	`12`	`width`
Linewidth of broken line	`int`	`8`	`width2`
Сontinue broken lines?	`bool`	`true`	`show_broken`
Start calculations from	`time`	`timestamp("2021-01-01")`	`start`

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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