-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=63078 --+------------------------------------------------------------------+ --| Copyright © 2018, Gehtsoft USA LLC | --| http://fxcodebase.com | --+------------------------------------------------------------------+ --| Developed by : Mario Jemic | --| mario.jemic@gmail.com | --+------------------------------------------------------------------+ --| Support our efforts by donating | --| Paypal: https://goo.gl/9Rj74e | --+------------------------------------------------------------------+ --| Patreon : https://goo.gl/GdXWeN | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ -- Indicator profile initialization routine -- Defines indicator profile properties and indicator parameters -- TODO: Add minimal and maximal value of numeric parameters and default color of the streams function Init() indicator:name("Bollinger Bands Price Overlay"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addString("Price" , "Data Source", "", "close"); indicator.parameters:addStringAlternative("Price" , "Open", "", "open"); indicator.parameters:addStringAlternative("Price", "High", "", "high"); indicator.parameters:addStringAlternative("Price" , "Low", "", "low"); indicator.parameters:addStringAlternative("Price" , "Close", "", "close"); indicator.parameters:addStringAlternative("Price", "Median", "", "median"); indicator.parameters:addStringAlternative("Price" , "Typical", "", "typical"); indicator.parameters:addStringAlternative("Price" , "Weighted ", "", "weighted"); indicator.parameters:addInteger("Period", "Period", "", 14, 2, 1000); indicator.parameters:addDouble("Deviations", "Number of standard deviations", "", 2); indicator.parameters:addBoolean("Show", "Show Bollinger Bands", "", false); indicator.parameters:addGroup("Overlay Style"); indicator.parameters:addColor("Up", "Color of Up Trend", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("UpDown", "Color of Down in Up Trend", "", core.rgb(0, 200, 0)); indicator.parameters:addColor("Down", "Color of Down Trend", "", core.rgb(255, 0, 0)); indicator.parameters:addColor("DownUp", "Color of Up in Down Trend", "", core.rgb(200, 0, 0)); indicator.parameters:addColor("NeutralUp", "Color of Neutral Trend Up", "", core.rgb(128, 128, 128)); indicator.parameters:addColor("NeutralDown", "Color of Neutral Trend Down", "", core.rgb(100, 100, 100)); indicator.parameters:addGroup("Line Style"); indicator.parameters:addColor("TC", "Color of Top Line", "", core.rgb(0, 0, 255)); indicator.parameters:addColor("BC", "Color of Bottom Line", "", core.rgb(0, 0, 255)); indicator.parameters:addInteger("width", "Line width", "", 1, 1, 5); indicator.parameters:addInteger("style", "Line style", "", core.LINE_SOLID); indicator.parameters:setFlag("style", core.FLAG_LINE_STYLE); end -- Indicator instance initialization routine -- Processes indicator parameters and creates output streams -- TODO: Refine the first period calculation for each of the output streams. -- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries -- Parameters block local Up,Down, NeutralUp, NeutralDown,DownUp, UpDown; local first; local source = nil; local Price; local open=nil; local close=nil; local high=nil; local low=nil; local TC,BC; local BB, Deviations, Period; local Show, TL,BL; function Prepare(nameOnly) Up = instance.parameters.Up; Down= instance.parameters.Down; TC= instance.parameters.TC; BC= instance.parameters.BC; UpDown = instance.parameters.UpDown; DownUp= instance.parameters.DownUp; NeutralDown= instance.parameters.NeutralDown; NeutralUp= instance.parameters.NeutralUp; Deviations = instance.parameters.Deviations; Price = instance.parameters.Price; Period= instance.parameters.Period; Show= instance.parameters.Show; source = instance.source; local Label1, Label2,Lebel3; local name = profile:id() .. "(" .. source:name() .. ", " .. source:barSize()..", ".. Period..", ".. Deviations .. ")"; instance:name(name); if (nameOnly) then return; end BB=core.indicators:create("BB", source[Price], Period, Deviations); first= BB.DATA:first(); if Show then TL = instance:addStream("TL", core.Line, name, "", TC, first); BL = instance:addStream("BL", core.Line, name, "", BC, first); TL:setWidth(instance.parameters.width); TL:setStyle(instance.parameters.style); BL:setWidth(instance.parameters.width); BL:setStyle(instance.parameters.style); else TL = instance:addInternalStream(first, 0); BL = instance:addInternalStream(first, 0); end open = instance:addStream("openup", core.Line, name, "", core.rgb(0, 0, 0), first); high = instance:addStream("highup", core.Line, name, "", core.rgb(0, 0, 0), first); low = instance:addStream("lowup", core.Line, name, "", core.rgb(0, 0, 0), first); close = instance:addStream("closeup", core.Line, name, "", core.rgb(0, 0, 0), first); instance:createCandleGroup("OVERLAY", "OVERLAY", open, high, low, close); end -- Indicator calculation routine function Update(period, mode) open[period] = source.open[period]; close[period] = source.close[period]; high[period] = source.high[period]; low[period] = source.low[period]; BB:update(mode); if period < first then open:setColor(period, NeutralUp); return; end TL[period]=BB.TL[period]; BL[period]=BB.BL[period]; if source.close[period]> BB.TL[period] then if source.close[period]> source.open[period] then open:setColor(period, Up); else open:setColor(period, UpDown); end elseif source.close[period]< BB.BL[period] then if source.close[period]< source.open[period] then open:setColor(period, Down); else open:setColor(period, DownUp); end else if source.close[period]> source.open[period] then open:setColor(period, NeutralUp); else open:setColor(period, NeutralDown); end end end