Horizontal Line Bands: 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

197 lines of Pine Script v5 from Tradingview/horizontal-line-bands-v2.pine, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.

horizontal-line-bands-v2.pine

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


//@version=5
indicator("Horizontal Line Bands", overlay = true, max_lines_count = 500)

// @keywords: horizontal-bands, mintick-bands, anchor-price, dual-band, line-recolor, breach-detection, keep-old-lines, bar-coloring, plotchar-marker, extended-lines, band-width, line-style, midline, upper-band, lower-band, price-breakout, band-switch, time-anchor, confirmed-bar, level-bands

line1_amount = input.int(2, minval = 1, title = 'Line One', group = 'Settings', inline ='1')
line1_color = input.color(color.new(color.yellow,0), title = '', group = 'Settings', inline ='1')
line1_style = input.string('Solid', title = '', options = ['Solid', 'Dotted', 'Dashed'], group = 'Settings', inline ='1')
line1_width = input.int(1, title = '', minval = 1, maxval = 5, group = 'Settings', inline ='1')

line2_amount = input.int(6, minval = 1, title = 'Line Two', group = 'Settings', inline ='2')
line2_color = input.color(color.new(color.green,0), title = '', group = 'Settings', inline ='2')
line2_style = input.string('Solid', title = '', options = ['Solid', 'Dotted', 'Dashed'], group = 'Settings', inline ='2')
line2_width = input.int(1, title = '', minval = 1, maxval = 5, group = 'Settings', inline ='2')

midline_color = input.color(color.new(#b2b5be,0), title = 'Line Close', group = 'Settings', inline ='3')
midline_style = input.string('Dashed', title = '', options = ['Solid', 'Dotted', 'Dashed'], group = 'Settings', inline ='3')
midline_width = input.int(1, title = '', minval = 1, maxval = 5, group = 'Settings', inline ='3')

keep_old_lines = input.bool(true, title = 'Keep Old Lines', group = 'Settings', inline ='4')
color_to_switch = input.color(color.blue, title = 'Switching Color', group = 'Settings', inline ='5')


varip float last_confirmed_time = na
last_confirmed_time := barstate.islastconfirmedhistory ? time : last_confirmed_time[1]
plotchar(time == last_confirmed_time ? true : false, title = 'Start Calculating', char = 'x', color = color.white)


var line_mid = array.new_line(100,na)
var line1_upper = array.new_line(100,na)
var line1_lower = array.new_line(100,na)
var line2_upper = array.new_line(100,na)
var line2_lower = array.new_line(100,na)

varip float line_mid_value = na
varip float line1_upper_value = na
varip float line1_lower_value = na
varip float line2_upper_value = na
varip float line2_lower_value = na


// function to draw lines
f_drawlines(line_mid, line1_upper, line1_lower, line2_upper, line2_lower, anchor) =>

    array.unshift(line_mid, line.new(x1 = time, y1 = anchor, x2 = time+1, y2 = anchor, xloc = xloc.bar_time,
         extend = extend.right, color = midline_color, width = midline_width,
         style = (midline_style == 'Solid' ? line.style_solid : midline_style == 'Dashed' ? line.style_dashed : midline_style == 'Dotted' ? line.style_dotted : line.style_solid)))

    array.unshift(line1_upper, line.new(x1 = time, y1 = anchor + syminfo.mintick*line1_amount, x2 = time+1, y2 = anchor + syminfo.mintick*line1_amount, xloc = xloc.bar_time,
         extend = extend.right, color = line1_color, width = line1_width,
         style = (line1_style == 'Solid' ? line.style_solid : line1_style == 'Dashed' ? line.style_dashed : line1_style == 'Dotted' ? line.style_dotted : line.style_solid)))

    array.unshift(line1_lower, line.new(x1 = time, y1 = anchor - syminfo.mintick*line1_amount, x2 = time+1, y2 = anchor - syminfo.mintick*line1_amount, xloc = xloc.bar_time,
         extend = extend.right, color = line1_color, width = line1_width,
         style = (line1_style == 'Solid' ? line.style_solid : line1_style == 'Dashed' ? line.style_dashed : line1_style == 'Dotted' ? line.style_dotted : line.style_solid)))

    array.unshift(line2_upper, line.new(x1 = time, y1 = anchor + syminfo.mintick*line2_amount, x2 = time+1, y2 = anchor + syminfo.mintick*line2_amount, xloc = xloc.bar_time,
         extend = extend.right, color = line2_color, width = line2_width,
         style = (line2_style == 'Solid' ? line.style_solid : line2_style == 'Dashed' ? line.style_dashed : line2_style == 'Dotted' ? line.style_dotted : line.style_solid)))

    array.unshift(line2_lower, line.new(x1 = time, y1 = anchor - syminfo.mintick*line2_amount, x2 = time+1, y2 = anchor - syminfo.mintick*line2_amount, xloc = xloc.bar_time,
         extend = extend.right, color = line2_color, width = line2_width,
         style = (line2_style == 'Solid' ? line.style_solid : line2_style == 'Dashed' ? line.style_dashed : line2_style == 'Dotted' ? line.style_dotted : line.style_solid)))



f_recolor(line_array) =>
    line.set_color(array.first(line_array), color_to_switch)


 // first time line
if time == last_confirmed_time
    f_drawlines(line_mid, line1_upper, line1_lower, line2_upper, line2_lower, close) 



varip bool past_confirmed_time = false
past_confirmed_time := time > last_confirmed_time ? true : false


varip bool high_greater_than_line1 = false
varip bool low_less_than_line1 = false
high_greater_than_line1 := high >= line1_upper_value and past_confirmed_time ? true : false
low_less_than_line1 := low <= line1_lower_value and past_confirmed_time ? true : false


varip bool high_greater_than_line2 = false
varip bool low_less_than_line2 = false
high_greater_than_line2 := high >= line2_upper_value and past_confirmed_time ? true : false
low_less_than_line2 := low <= line2_lower_value and past_confirmed_time ? true : false




// get line values
line_mid_value := past_confirmed_time ? line.get_y1(array.first(line_mid)) : line_mid_value[1]
line1_upper_value := past_confirmed_time ? line.get_y1(array.first(line1_upper)) : line1_upper_value[1]
line1_lower_value := past_confirmed_time ? line.get_y1(array.first(line1_lower)) : line1_lower_value[1]
line2_upper_value := past_confirmed_time ? line.get_y1(array.first(line2_upper)) : line2_upper_value[1]
line2_lower_value := past_confirmed_time ? line.get_y1(array.first(line2_lower)) : line2_lower_value[1]


// extend x2 to current bar's time
if past_confirmed_time
    line.set_x2(array.first(line_mid), time)
    line.set_x2(array.first(line1_upper), time)
    line.set_x2(array.first(line1_lower), time)
    line.set_x2(array.first(line2_upper), time)
    line.set_x2(array.first(line2_lower), time)


// replace colors
line.set_color(array.first(line1_upper), high_greater_than_line2 or high_greater_than_line1 or low_less_than_line2 ? color_to_switch : line1_color)
line.set_color(array.first(line1_lower), low_less_than_line2 or low_less_than_line1 or high_greater_than_line2 ? color_to_switch : line1_color)
line.set_color(array.first(line2_upper), high_greater_than_line2 or low_less_than_line2 ? color_to_switch : line2_color)
line.set_color(array.first(line2_lower), low_less_than_line2 or high_greater_than_line2 ? color_to_switch : line2_color)
line.set_color(array.first(line_mid), low_less_than_line2 or high_greater_than_line2 ? color_to_switch : midline_color)




// // past confirmed time
// if past_confirmed_time

//     // get line values
//     line_mid_value := line.get_y1(array.first(line_mid))
//     line1_upper_value := line.get_y1(array.first(line1_upper))
//     line1_lower_value := line.get_y1(array.first(line1_lower))
//     line2_upper_value := line.get_y1(array.first(line2_upper))
//     line2_lower_value := line.get_y1(array.first(line2_lower))

//     // // extend x2 to current bar's time
//     line.set_x2(array.first(line_mid), time)
//     line.set_x2(array.first(line1_upper), time)
//     line.set_x2(array.first(line1_lower), time)
//     line.set_x2(array.first(line2_upper), time)
//     line.set_x2(array.first(line2_lower), time)

//     // replace colors line 1
//     if high_greater_than_line1
//         line.set_color(array.first(line1_upper), color_to_switch)
//     if low_less_than_line1
//         line.set_color(array.first(line1_lower), color_to_switch)


//     // check for intrabar redraw
//     if (high_greater_than_line2 and not low_less_than_line2) or (low_less_than_line2 and not high_greater_than_line2)

//         anchor = high_greater_than_line2 ? line2_upper_value : line2_lower_value
//         line.set_color(array.first(line_mid), color_to_switch)
//         line.set_color(array.first(line1_upper), color_to_switch)
//         line.set_color(array.first(line1_lower), color_to_switch)
//         line.set_color(array.first(line2_upper), color_to_switch)
//         line.set_color(array.first(line2_lower), color_to_switch)

//         if not keep_old_lines
//             line.delete(array.first(line_mid))
//             line.delete(array.first(line1_upper))
//             line.delete(array.first(line1_lower))
//             line.delete(array.first(line2_upper))
//             line.delete(array.first(line2_lower))

//         // end extension since lines aren't being deleted
//         line.set_extend(array.first(line_mid), extend.none)
//         line.set_extend(array.first(line1_upper), extend.none)
//         line.set_extend(array.first(line1_lower), extend.none)
//         line.set_extend(array.first(line2_upper), extend.none)
//         line.set_extend(array.first(line2_lower), extend.none)
        
//         // draw new lines
//         f_drawlines(line_mid, line1_upper, line1_lower, line2_upper, line2_lower, anchor) 

//         // reset line values
//         line_mid_value := line.get_y1(array.first(line_mid))
//         line1_upper_value := line.get_y1(array.first(line1_upper))
//         line1_lower_value := line.get_y1(array.first(line1_lower))
//         line2_upper_value := line.get_y1(array.first(line2_upper))
//         line2_lower_value := line.get_y1(array.first(line2_lower))



var label testlabel = na
var label testlabel2 = na
if barstate.islast
    testlabel := label.new(x = bar_index, y = 4065, text = "High:  " + str.tostring(high_greater_than_line2), color = color.white)
    testlabel2 := label.new(x = bar_index, y = 4062, text = "Low:  " + str.tostring(low_less_than_line2), color = color.white)

barcolor(high >= line2_upper_value ? color.teal : low <= line2_lower_value ? color.fuchsia : high >= line1_upper_value and low <= line1_lower_value ? color.yellow : high >= line1_upper_value ? color.green : low <= line1_lower_value ? color.red : na)




// might be when lines get redrawn and overlap with high/low they dont trigger to switch the line color

Overview

Horizontal Line Bands calculates a central midline along with inner and outer symmetrical boundary lines offset by specified multiples of the instrument's minimum tick size. Users can customize the tick distance, line colors, styles, widths, and choose whether to preserve previous historical lines. Because it relies on intra-bar execution variables and anchors to the last confirmed historical bar, the drawn levels repaint during live updates.

Dual tick-based horizontal boundary bands
Configurable line offsets based on minimum tick size
Customizable line colors, widths, and dash styles
Optional history retention for previous lines

Details

Published by

g-moe on GitHub

Code credit

goodgains, as written in the script's header

Type

Indicator, Pine Script v5

Draws

On the price chart

Markets

Any symbol

Timeframes

Any timeframe

Risk Notes

Signals can change on the live bar or after it closes (repainting)

File

Tradingview/horizontal-line-bands-v2.pine

Repository

github.com/g-moe/Trading-Indicators. 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
Line One	`int`	`2`	`line1_amount`
line1_color	`color`	`color.new(color.yellow,0)`	`line1_color`
line1_style	`string`	`Solid`	`line1_style`
line1_width	`int`	`1`	`line1_width`
Line Two	`int`	`6`	`line2_amount`
line2_color	`color`	`color.new(color.green,0)`	`line2_color`
line2_style	`string`	`Solid`	`line2_style`
line2_width	`int`	`1`	`line2_width`
Line Close	`color`	`color.new(#b2b5be,0)`	`midline_color`
midline_style	`string`	`Dashed`	`midline_style`
midline_width	`int`	`1`	`midline_width`
Keep Old Lines	`bool`	`true`	`keep_old_lines`

Show all 13 settings

Setting	Type	Default	Variable
Switching Color	`color`	`color.blue`	`color_to_switch`

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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