-- Id: 10047 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=1262 --+------------------------------------------------------------------+ --| 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 | --+------------------------------------------------------------------+ function Init() indicator:name("Ehlers TwoPole smoothes oscillator"); indicator:description("Ehlers TwoPole smoothes oscillator"); indicator:requiredSource(core.Tick); indicator:type(core.Oscillator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("CuttOff", "CuttOff", "", 15); indicator.parameters:addDouble("alpha", "alpha", "", 0.15); indicator.parameters:addInteger("shift", "shift", "", 0); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("Up", "Color of Up", "Color of Up", core.rgb(0, 255, 0)); indicator.parameters:addColor("Down", "Color of Down", "Color of Down", core.rgb(255,0, 0)); indicator.parameters:addInteger("widthLinReg1", "Line width", "Line width", 1, 1, 5); indicator.parameters:addInteger("styleLinReg1", "Line style", "Line style", core.LINE_SOLID); indicator.parameters:setFlag("styleLinReg1", core.FLAG_LINE_STYLE); end local first; local source = nil; local CuttOff; local alpha; local shift; local Buff1=nil; local Buff2=nil; local BuffLine=nil; local Ind; function Prepare(nameOnly) source = instance.source; CuttOff=instance.parameters.CuttOff; alpha=instance.parameters.alpha; shift=instance.parameters.shift; local name = profile:id() .. "(" .. source:name() .. ", " .. instance.parameters.CuttOff .. ", " .. instance.parameters.alpha .. ", " .. instance.parameters.shift .. ")"; instance:name(name); if (nameOnly) then return; end assert(core.indicators:findIndicator("TICK EHLERS_TWOPOLE_SMOOTHED_FILTER") ~= nil, "Please, download and install TICK EHLERS_TWOPOLE_SMOOTHED_FILTER.LUA indicator"); Ind = core.indicators:create("TICK EHLERS_TWOPOLE_SMOOTHED_FILTER", source, CuttOff); first = Ind.DATA:first()+3; BuffLine = instance:addStream("BuffLine", core.Line, name .. ".BuffLine", "BuffLine", instance.parameters.Up, first); BuffLine:addLevel(0); BuffLine:setWidth(instance.parameters.widthLinReg1); BuffLine:setStyle(instance.parameters.styleLinReg1); BuffLine:setPrecision(math.max(2, instance.source:getPrecision())); end function Update(period, mode) if (period>first) then Ind:update(mode); local Val=Ind.DATA[period]-Ind.DATA[period-1]; local Val1=Ind.DATA[period-1]-Ind.DATA[period-2]; local Val2=Ind.DATA[period-2]-Ind.DATA[period-3]; BuffLine[period]=(alpha-(alpha*alpha/4.))*Val+(alpha*alpha/2.)*Val1-(alpha-3.*alpha*alpha/4.)*Val2+2.*(1-alpha)*BuffLine[period-1]-(1-alpha)*(1-alpha)*BuffLine[period-2]; if BuffLine[period]