-- Id: 16039 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=63472 --+------------------------------------------------------------------+ --| 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 Band divergence indicator"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator.parameters:addString("Instrument", "Instrument", "", "AUD/JPY"); indicator.parameters:setFlag("Instrument", core.FLAG_INSTRUMENTS); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Period", "Period", "", 20); indicator.parameters:addInteger("F1", "F1", "", 2); indicator.parameters:addInteger("F2", "F2", "", 4); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("color", "Line Color", "", core.rgb(255, 0, 0)); indicator.parameters:addInteger("width", "Indicator Line Width", "", 1, 1, 5); indicator.parameters:addInteger("style", "Indicator Line Style", "", core.LINE_SOLID); indicator.parameters:setFlag("style", core.FLAG_LINE_STYLE); end local dayoffset,weekoffset; local Source; local Instrument; local first; local source = nil; local loading; local Number ; local Period, F1,F2; local DIVERG; -- Routine function Prepare(nameOnly) source = instance.source; dayoffset = core.host:execute("getTradingDayOffset"); weekoffset = core.host:execute("getTradingWeekOffset"); Instrument= instance.parameters.Instrument; Period= instance.parameters.Period; F1= instance.parameters.F1; F2= instance.parameters.F2; local name = profile:id() .. "(" .. source:name() .. ")"; instance:name(name); if (nameOnly) then return; end Source = core.host:execute("getSyncHistory",Instrument, source:barSize(), source:isBid(), math.min(300,Period), 200, 100); loading=true; DIVERG = instance:addStream("DIVERG", core.Line, name, "DIVERG", instance.parameters.color, source:first()); DIVERG:setPrecision(math.max(2, instance.source:getPrecision())); DIVERG:setWidth(instance.parameters.width); DIVERG:setStyle(instance.parameters.style); end -- Indicator calculation routine -- TODO: Add your code for calculation output values function Update(period ) local p= Initialization(period) if loading or not p or p< Period or period < Period then return; end local SD1 = mathex.stdev (source.close,period-Period+1, period); local SMA1 = mathex.avg(source.close,period-Period+1, period); local BB1 = 1+(source.close[period]-SMA1+F1*SD1)/(F2*SD1); local SD2 = mathex.stdev (Source.close,p-Period+1, p); local SMA2 = mathex.avg(Source.close,p-Period+1, p); local BB2 = 1+(Source.close[p]-SMA2+F1*SD2)/(F2*SD2); DIVERG[period] = (BB2-BB1)/BB1*100 end function Initialization(period) local Candle; Candle = core.getcandle(source:barSize(), source:date(period), dayoffset, weekoffset); if loading or Source:size() == 0 then return false; end if period < source:first() then return false; end local P = core.findDate(Source, Candle, false); -- candle is not found if P < 0 then return false; else return P; end end -- the function is called when the async operation is finished function AsyncOperationFinished(cookie) if cookie == (100) then loading = true; elseif cookie == (200) then loading = false; instance:updateFrom(0); end return core.ASYNC_REDRAW ; end