-- Id: 422 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=671 --+------------------------------------------------------------------+ --| 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 function Init() indicator:name("Aroon Oscillator"); indicator:description("Aroon Oscillator"); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator:setTag("group", "Trend"); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("N", "Period", "Period", 25, 3, 1000); indicator.parameters:addGroup("Style"); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("Color", "Aroon Oscillator", "Aroon Oscillator ", core.rgb(255, 0, 0)); 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); indicator.parameters:addGroup("OB/OS Levels"); indicator.parameters:addDouble("overbought", "Overbought Level","", 50); indicator.parameters:addDouble("oversold","Oversold Level","", -50); indicator.parameters:addColor("level_overboughtsold_color", "Line Color","", core.rgb(128, 128, 128)); indicator.parameters:addInteger("level_overboughtsold_width","Line width","", 1, 1, 5); indicator.parameters:addInteger("level_overboughtsold_style", "Line Style","", core.LINE_SOLID); indicator.parameters:setFlag("level_overboughtsold_style", core.FLAG_LEVEL_STYLE); end -- Indicator instance initialization routine -- Processes indicator parameters and creates output streams -- Parameters block local N; local firstPeriod; local source = nil; -- Streams block local UP = {}; local DOWN = {}; local Aroon=nil; -- Routine function Prepare(nameOnly) N = instance.parameters.N; source = instance.source; firstPeriod = source:first() + N - 1; local name = profile:id() .. "(" .. source:name() .. ", " .. N .. ")"; instance:name(name); if (nameOnly) then return; end UP = instance:addInternalStream(0, 0); DOWN = instance:addInternalStream(0, 0); Aroon = instance:addStream("Aroon", core.Line, name .. " Oscillator", "Aroon", instance.parameters.Color, firstPeriod) Aroon:setPrecision(math.max(2, instance.source:getPrecision())); Aroon:addLevel(instance.parameters.oversold, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Aroon:addLevel(instance.parameters.overbought, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Aroon:setWidth(instance.parameters.width); Aroon:setStyle(instance.parameters.style); end -- Indicator calculation routine function Update(period) local v, i; if period >= firstPeriod then v, i = core.max(source.high, core.rangeTo(period, N)); UP[period] = (N - (period - i)) / N * 100; v, i = core.min(source.low, core.rangeTo(period, N)); DOWN[period] = (N - (period - i)) / N * 100; Aroon[period]= UP[period]-DOWN[period]; end end