本页源码来自 TradingView 公开发布的开源脚本，版权归原作者所有， 请遵循其原始许可（Pine 脚本常见 CC BY-NC-SA / MPL-2.0 / MIT）。 本项目仅用于研究检索与许可范围内的移植。
//
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// @version = 4
// @author = The_Caretaker
// © The_Caretaker
//
// Much respect to John A Bollinger the creator of Bollinger Bands® and Bollinger Band Width indicators.
//
// Feel free to reuse or develop this script further, please drop me a note below if you find it useful.
//
study ( "Bollinger Band Width Percentile", "BBWP", overlay = false, format = format.percent, precision = 2)
///////////////////////////////////////////////////////////////////////////////
// inputs
i_priceSrc = input ( close, "Price Source", input.source, group = "BBWP Properties" )
i_basisType = input ( "SMA", "Basis Type", input.string, options = [ "SMA", "EMA", "VWMA" ], group = "BBWP Properties" )
i_bbwpLen = input ( 20, "Length", input.integer, minval = 1, group = "BBWP Properties" )
i_bbwpLkbk = input ( 255, "Lookback", input.integer, minval = 1, group = "BBWP Properties" )
i_c_bbwpTyped = input ( "Spectrum", "Color Type", input.string, options = [ "Spectrum", "Solid" ], inline = "1", group = "BBWP Plot Settings" )
i_c_spctrmType = input ( "Blue Green Red", "Spectrum", input.string, options = [ "Blue Red", "Blue Green Red"], inline = "1", group = "BBWP Plot Settings" )
i_c_bbwpsolid = input ( #FFFF00, "Solid", input.color, inline = "1", group = "BBWP Plot Settings" )
i_bbwpWidth = input ( 2, "Line Width", input.integer, minval = 1, maxval = 4, inline = "2", group = "BBWP Plot Settings" )
i_bbwpTransp = input ( 0, "Transparancy", input.integer, minval = 0, inline = "3", group = "BBWP Plot Settings" )
i_ma1On = input ( true, "", input.bool, inline = "1", group = "Moving Average Settings" )
i_ma1Type = input ( "SMA", "MA 1 Type", input.string, options = [ "SMA", "EMA", "VWMA" ], inline = "1", group = "Moving Average Settings" )
i_c_ma1 = input ( #FFFFFF, "", input.color, inline = "1", group = "Moving Average Settings" )
i_ma1Len = input ( 8, "Length", input.integer, minval = 1, inline = "1", group = "Moving Average Settings" )
i_ma2On = input ( false, "", input.bool, inline = "2", group = "Moving Average Settings" )
i_ma2Type = input ( "SMA", "MA 2 Type", input.string, options = [ "SMA", "EMA", "VWMA" ], inline = "2", group = "Moving Average Settings" )
i_c_ma2 = input ( #00FFFF, "", input.color, inline = "2", group = "Moving Average Settings" )
i_ma2Len = input ( 14, "Length", input.integer, minval = 1, inline = "2", group = "Moving Average Settings" )
i_alrtsOn = input ( true, "Alerts On", input.bool, group = "Visual Alerts" )
i_upperLevel = input ( 100, "Extreme High", input.integer, minval = 1, inline = "1", group = "Visual Alerts" )
i_lowerLevel = input ( 0, "Extreme Low", input.integer, minval = 1, inline = "1", group = "Visual Alerts" )
i_alrtTransp = input ( 0, "Transparancy", input.integer, minval = 0, inline = "2", group = "Visual Alerts" )
///////////////////////////////////////////////////////////////////////////////
// variable declarations
var c_prcntSpctrm1 = array.new_color ( na )
if barstate.isfirst
array.push ( c_prcntSpctrm1, #0000FF ),
array.push ( c_prcntSpctrm1, #000AFF ), array.push ( c_prcntSpctrm1, #0014FF ), array.push ( c_prcntSpctrm1, #001FFF ), array.push ( c_prcntSpctrm1, #0029FF ), array.push ( c_prcntSpctrm1, #0033FF ),
array.push ( c_prcntSpctrm1, #003DFF ), array.push ( c_prcntSpctrm1, #0047FF ), array.push ( c_prcntSpctrm1, #0052FF ), array.push ( c_prcntSpctrm1, #005CFF ), array.push ( c_prcntSpctrm1, #0066FF ),
array.push ( c_prcntSpctrm1, #0070FF ), array.push ( c_prcntSpctrm1, #007AFF ), array.push ( c_prcntSpctrm1, #0085FF ), array.push ( c_prcntSpctrm1, #008FFF ), array.push ( c_prcntSpctrm1, #0099FF ),
array.push ( c_prcntSpctrm1, #00A3FF ), array.push ( c_prcntSpctrm1, #00ADFF ), array.push ( c_prcntSpctrm1, #00B8FF ), array.push ( c_prcntSpctrm1, #00C2FF ), array.push ( c_prcntSpctrm1, #00CCFF ),
array.push ( c_prcntSpctrm1, #00D6FF ), array.push ( c_prcntSpctrm1, #00E0FF ), array.push ( c_prcntSpctrm1, #00EBFF ), array.push ( c_prcntSpctrm1, #00F5FF ), array.push ( c_prcntSpctrm1, #00FFFF ),
array.push ( c_prcntSpctrm1, #00FFF5 ), array.push ( c_prcntSpctrm1, #00FFEB ), array.push ( c_prcntSpctrm1, #00FFE0 ), array.push ( c_prcntSpctrm1, #00FFD6 ), array.push ( c_prcntSpctrm1, #00FFCC ),
array.push ( c_prcntSpctrm1, #00FFC2 ), array.push ( c_prcntSpctrm1, #00FFB8 ), array.push ( c_prcntSpctrm1, #00FFAD ), array.push ( c_prcntSpctrm1, #00FFA3 ), array.push ( c_prcntSpctrm1, #00FF99 ),
array.push ( c_prcntSpctrm1, #00FF8F ), array.push ( c_prcntSpctrm1, #00FF85 ), array.push ( c_prcntSpctrm1, #00FF7A ), array.push ( c_prcntSpctrm1, #00FF70 ), array.push ( c_prcntSpctrm1, #00FF66 ),
array.push ( c_prcntSpctrm1, #00FF5C ), array.push ( c_prcntSpctrm1, #00FF52 ), array.push ( c_prcntSpctrm1, #00FF47 ), array.push ( c_prcntSpctrm1, #00FF3D ), array.push ( c_prcntSpctrm1, #00FF33 ),
array.push ( c_prcntSpctrm1, #00FF29 ), array.push ( c_prcntSpctrm1, #00FF1F ), array.push ( c_prcntSpctrm1, #00FF14 ), array.push ( c_prcntSpctrm1, #00FF0A ), array.push ( c_prcntSpctrm1, #00FF00 ),
array.push ( c_prcntSpctrm1, #0AFF00 ), array.push ( c_prcntSpctrm1, #14FF00 ), array.push ( c_prcntSpctrm1, #1FFF00 ), array.push ( c_prcntSpctrm1, #29FF00 ), array.push ( c_prcntSpctrm1, #33FF00 ),
array.push ( c_prcntSpctrm1, #3DFF00 ), array.push ( c_prcntSpctrm1, #47FF00 ), array.push ( c_prcntSpctrm1, #52FF00 ), array.push ( c_prcntSpctrm1, #5CFF00 ), array.push ( c_prcntSpctrm1, #66FF00 ),
array.push ( c_prcntSpctrm1, #70FF00 ), array.push ( c_prcntSpctrm1, #7AFF00 ), array.push ( c_prcntSpctrm1, #85FF00 ), array.push ( c_prcntSpctrm1, #8FFF00 ), array.push ( c_prcntSpctrm1, #99FF00 ),
array.push ( c_prcntSpctrm1, #A3FF00 ), array.push ( c_prcntSpctrm1, #ADFF00 ), array.push ( c_prcntSpctrm1, #B8FF00 ), array.push ( c_prcntSpctrm1, #C2FF00 ), array.push ( c_prcntSpctrm1, #CCFF00 ),
array.push ( c_prcntSpctrm1, #D6FF00 ), array.push ( c_prcntSpctrm1, #E0FF00 ), array.push ( c_prcntSpctrm1, #EBFF00 ), array.push ( c_prcntSpctrm1, #F5FF00 ), array.push ( c_prcntSpctrm1, #FFFF00 ),
array.push ( c_prcntSpctrm1, #FFF500 ), array.push ( c_prcntSpctrm1, #FFEB00 ), array.push ( c_prcntSpctrm1, #FFE000 ), array.push ( c_prcntSpctrm1, #FFD600 ), array.push ( c_prcntSpctrm1, #FFCC00 ),
array.push ( c_prcntSpctrm1, #FFC200 ), array.push ( c_prcntSpctrm1, #FFB800 ), array.push ( c_prcntSpctrm1, #FFAD00 ), array.push ( c_prcntSpctrm1, #FFA300 ), array.push ( c_prcntSpctrm1, #FF9900 ),
array.push ( c_prcntSpctrm1, #FF8F00 ), array.push ( c_prcntSpctrm1, #FF8500 ), array.push ( c_prcntSpctrm1, #FF7A00 ), array.push ( c_prcntSpctrm1, #FF7000 ), array.push ( c_prcntSpctrm1, #FF6600 ),
array.push ( c_prcntSpctrm1, #FF5C00 ), array.push ( c_prcntSpctrm1, #FF5200 ), array.push ( c_prcntSpctrm1, #FF4700 ), array.push ( c_prcntSpctrm1, #FF3D00 ), array.push ( c_prcntSpctrm1, #FF3300 ),
array.push ( c_prcntSpctrm1, #FF2900 ), array.push ( c_prcntSpctrm1, #FF1F00 ), array.push ( c_prcntSpctrm1, #FF1400 ), array.push ( c_prcntSpctrm1, #FF0000 ), array.push ( c_prcntSpctrm1, #FF0000 )
var c_prcntSpctrm2 = array.new_color ( na )
if barstate.isfirst
array.push ( c_prcntSpctrm2, #0000FF ),
array.push ( c_prcntSpctrm2, #0200FC ), array.push ( c_prcntSpctrm2, #0500F9 ), array.push ( c_prcntSpctrm2, #0700F7 ), array.push ( c_prcntSpctrm2, #0A00F4 ), array.push ( c_prcntSpctrm2, #0C00F2 ),
array.push ( c_prcntSpctrm2, #0F00EF ), array.push ( c_prcntSpctrm2, #1100ED ), array.push ( c_prcntSpctrm2, #1400EA ), array.push ( c_prcntSpctrm2, #1600E8 ), array.push ( c_prcntSpctrm2, #1900E5 ),
array.push ( c_prcntSpctrm2, #1C00E2 ), array.push ( c_prcntSpctrm2, #1E00E0 ), array.push ( c_prcntSpctrm2, #2100DD ), array.push ( c_prcntSpctrm2, #2300DB ), array.push ( c_prcntSpctrm2, #2600D8 ),
array.push ( c_prcntSpctrm2, #2800D6 ), array.push ( c_prcntSpctrm2, #2B00D3 ), array.push ( c_prcntSpctrm2, #2D00D1 ), array.push ( c_prcntSpctrm2, #3000CE ), array.push ( c_prcntSpctrm2, #3300CC ),
array.push ( c_prcntSpctrm2, #3500C9 ), array.push ( c_prcntSpctrm2, #3800C6 ), array.push ( c_prcntSpctrm2, #3A00C4 ), array.push ( c_prcntSpctrm2, #3D00C1 ), array.push ( c_prcntSpctrm2, #3F00BF ),
array.push ( c_prcntSpctrm2, #4200BC ), array.push ( c_prcntSpctrm2, #4400BA ), array.push ( c_prcntSpctrm2, #4700B7 ), array.push ( c_prcntSpctrm2, #4900B5 ), array.push ( c_prcntSpctrm2, #4C00B2 ),
array.push ( c_prcntSpctrm2, #4F00AF ), array.push ( c_prcntSpctrm2, #5100AD ), array.push ( c_prcntSpctrm2, #5400AA ), array.push ( c_prcntSpctrm2, #5600A8 ), array.push ( c_prcntSpctrm2, #5900A5 ),
array.push ( c_prcntSpctrm2, #5B00A3 ), array.push ( c_prcntSpctrm2, #5E00A0 ), array.push ( c_prcntSpctrm2, #60009E ), array.push ( c_prcntSpctrm2, #63009B ), array.push ( c_prcntSpctrm2, #660099 ),
array.push ( c_prcntSpctrm2, #680096 ), array.push ( c_prcntSpctrm2, #6B0093 ), array.push ( c_prcntSpctrm2, #6D0091 ), array.push ( c_prcntSpctrm2, #70008E ), array.push ( c_prcntSpctrm2, #72008C ),
array.push ( c_prcntSpctrm2, #750089 ), array.push ( c_prcntSpctrm2, #770087 ), array.push ( c_prcntSpctrm2, #7A0084 ), array.push ( c_prcntSpctrm2, #7C0082 ), array.push ( c_prcntSpctrm2, #7F007F ),
array.push ( c_prcntSpctrm2, #82007C ), array.push ( c_prcntSpctrm2, #84007A ), array.push ( c_prcntSpctrm2, #870077 ), array.push ( c_prcntSpctrm2, #890075 ), array.push ( c_prcntSpctrm2, #8C0072 ),
array.push ( c_prcntSpctrm2, #8E0070 ), array.push ( c_prcntSpctrm2, #91006D ), array.push ( c_prcntSpctrm2, #93006B ), array.push ( c_prcntSpctrm2, #960068 ), array.push ( c_prcntSpctrm2, #990066 ),
array.push ( c_prcntSpctrm2, #9B0063 ), array.push ( c_prcntSpctrm2, #9E0060 ), array.push ( c_prcntSpctrm2, #A0005E ), array.push ( c_prcntSpctrm2, #A3005B ), array.push ( c_prcntSpctrm2, #A50059 ),
array.push ( c_prcntSpctrm2, #A80056 ), array.push ( c_prcntSpctrm2, #AA0054 ), array.push ( c_prcntSpctrm2, #AD0051 ), array.push ( c_prcntSpctrm2, #AF004F ), array.push ( c_prcntSpctrm2, #B2004C ),
array.push ( c_prcntSpctrm2, #B50049 ), array.push ( c_prcntSpctrm2, #B70047 ), array.push ( c_prcntSpctrm2, #BA0044 ), array.push ( c_prcntSpctrm2, #BC0042 ), array.push ( c_prcntSpctrm2, #BF003F ),
array.push ( c_prcntSpctrm2, #C1003D ), array.push ( c_prcntSpctrm2, #C4003A ), array.push ( c_prcntSpctrm2, #C60038 ), array.push ( c_prcntSpctrm2, #C90035 ), array.push ( c_prcntSpctrm2, #CC0033 ),
array.push ( c_prcntSpctrm2, #CE0030 ), array.push ( c_prcntSpctrm2, #D1002D ), array.push ( c_prcntSpctrm2, #D3002B ), array.push ( c_prcntSpctrm2, #D60028 ), array.push ( c_prcntSpctrm2, #D80026 ),
array.push ( c_prcntSpctrm2, #DB0023 ), array.push ( c_prcntSpctrm2, #DD0021 ), array.push ( c_prcntSpctrm2, #E0001E ), array.push ( c_prcntSpctrm2, #E2001C ), array.push ( c_prcntSpctrm2, #E50019 ),
array.push ( c_prcntSpctrm2, #E80016 ), array.push ( c_prcntSpctrm2, #EA0014 ), array.push ( c_prcntSpctrm2, #ED0011 ), array.push ( c_prcntSpctrm2, #EF000F ), array.push ( c_prcntSpctrm2, #F2000C ),
array.push ( c_prcntSpctrm2, #F4000A ), array.push ( c_prcntSpctrm2, #F70007 ), array.push ( c_prcntSpctrm2, #F90005 ), array.push ( c_prcntSpctrm2, #FC0002 ), array.push ( c_prcntSpctrm2, #FF0000 )
///////////////////////////////////////////////////////////////////////////////
// function declarations
f_maType ( price, len, type ) => type == "SMA" ? sma ( price, len ) : type == "EMA" ? ema ( price, len ) : vwma ( price, len )
f_bbwp ( price, bbwLen, bbwpLen, type ) =>
float basis = f_maType ( price, bbwLen, type )
float dev = stdev ( price, bbwLen )
_bbw = (( basis + dev ) - ( basis - dev )) / basis
_bbwSum = 0
for i = 1 to bbwpLen
_bbwSum := _bbwSum + ( _bbw [i] > _bbw ? 0 : 1 )
return = ( _bbwSum / i_bbwpLkbk ) * 100
f_clrSlct ( percent, select, type, solid, array1, array2 ) => select == "Solid" ? solid : array.get ( type == "Blue Green Red" ? array1 : array2, round ( percent ) )
///////////////////////////////////////////////////////////////////////////////
// calculations
bbwp = f_bbwp ( i_priceSrc, i_bbwpLen, i_bbwpLkbk, i_basisType )
c_bbwp = f_clrSlct ( bbwp, i_c_bbwpTyped, i_c_spctrmType, i_c_bbwpsolid, c_prcntSpctrm1, c_prcntSpctrm2 )
bbwpMA1 = i_ma1On ? f_maType ( bbwp, i_ma1Len, i_ma1Type ) : na
bbwpMA2 = i_ma2On ? f_maType ( bbwp, i_ma2Len, i_ma2Type ) : na
hiAlrtBar = i_alrtsOn and bbwp >= i_upperLevel ? bbwp : na
loAlrtBar = i_alrtsOn and bbwp <= i_lowerLevel ? bbwp : na
///////////////////////////////////////////////////////////////////////////////
// plots
p_scaleHi = hline ( 100, "Scale High", #ff0000, hline.style_solid )
p_midLine = hline ( 50, "Mid-Line", color.silver, hline.style_dashed )
p_scaleLo = hline ( 0, "Scale Low", #0000ff, hline.style_solid )
p_bbwp = plot ( bbwp, "BBWP", c_bbwp, i_bbwpWidth, plot.style_line, transp = i_bbwpTransp, editable = false )
p_hiAlrt = plot ( hiAlrtBar, "Extreme Hi", c_bbwp, 1, plot.style_columns, transp = i_alrtTransp, histbase = 0, editable = false )
p_loAlrt = plot ( loAlrtBar, "Extreme Lo", c_bbwp, 1, plot.style_columns, transp = i_alrtTransp, histbase = 100, editable = false )
p_ma1 = plot ( bbwpMA1, "MA 1", i_c_ma1, 1, plot.style_line, 0 )
p_ma2 = plot ( bbwpMA2, "MA 2", i_c_ma2, 1, plot.style_line, 0 )
/////////////////////////////
// end