-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=68887 --+------------------------------------------------------------------+ --| Copyright © 2019, 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("Z distance from VWAP"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Period", "Period", "", 20, 1, 2000); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("color", "Line Color", "", core.rgb(255, 0, 0)); indicator.parameters:addInteger("style", "Line Style", "", core.LINE_SOLID); indicator.parameters:setFlag("style", core.FLAG_LEVEL_STYLE); indicator.parameters:addInteger("width", "Line Width", "", 3, 1, 5); indicator.parameters:addGroup("OB/OS Levels"); indicator.parameters:addDouble("overbought1", "1. Overbought Level","", 2.5); indicator.parameters:addDouble("oversold1","1. Oversold Level","", -2.5); indicator.parameters:addDouble("overbought2", "2. Overbought Level","", 2); indicator.parameters:addDouble("oversold2","2. Oversold Level","", -2); 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 Period; local first; local source = nil; local Data; local PV; local Oscillator; -- Routine function Prepare(nameOnly) Period= instance.parameters.Period; local Parameters= Period; local name = profile:id() .. "(" .. instance.source:name() .. ", " .. Parameters .. ")"; instance:name(name); if (nameOnly) then return; end source = instance.source; first=source:first()+Period ; PV= instance:addInternalStream(0, 0); Data= instance:addInternalStream(0, 0); Oscillator = instance:addStream("Oscillator" , core.Line, " Oscillator"," Oscillator",instance.parameters.color, first +Period ); Oscillator:setWidth(instance.parameters.width); Oscillator:setStyle(instance.parameters.style); Oscillator:setPrecision(math.max(2, source:getPrecision())); Oscillator:addLevel(instance.parameters.oversold1, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Oscillator:addLevel(instance.parameters.overbought1, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Oscillator:addLevel(instance.parameters.oversold2, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Oscillator:addLevel(instance.parameters.overbought2, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); Oscillator:addLevel(0, instance.parameters.level_overboughtsold_style, instance.parameters.level_overboughtsold_width, instance.parameters.level_overboughtsold_color); end -- Indicator calculation routine function Update(period, mode) if period < source:first() then return; end PV[period]=source.close[period]*source.volume[period]; if period < first then return; end local mean= mathex.sum(PV, period-Period+1, period)/ mathex.sum(source.volume, period-Period+1, period); Data[period]=math.pow(source.close[period]-mean, 2); if period < first +Period then return; end local sma= mathex.avg(Data, period-Period+1, period); local vwapsd = math.sqrt(sma); Oscillator[period]= (source.close[period]-mean)/vwapsd; end