-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=68919 --+------------------------------------------------------------------+ --| 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 -- Defines indicator profile properties and indicator parameters function Init() indicator:name("SuperTrend Band"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("N", "Number of periods", "", 10); indicator.parameters:addDouble("M", "Multiplier", "", 1.5); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("color1", "Color of UP", "Color of UP", core.rgb(0, 255, 0)); indicator.parameters:addColor("color2", "Color of DN", "Color of DN", core.rgb(255, 0, 0)); indicator.parameters:addInteger("width", "Width", "Width", 1, 1, 5); indicator.parameters:addInteger("style", "Style", "Style", core.LINE_SOLID); indicator.parameters:setFlag("style", core.FLAG_LINE_STYLE); end -- Indicator instance initialization routine -- Processes indicator parameters and creates output streams -- Parameters block local N; local M; local first; local source = nil; local ATR = nil; -- Streams block local UP = nil; local DN = nil; local up, dn; -- Routine function Prepare(nameOnly) N = instance.parameters.N; M = instance.parameters.M; source = instance.source; local name = profile:id() .. "(" .. source:name() .. ", " .. N .. ", " .. M .. ")"; instance:name(name); if (nameOnly) then return; end ATR = core.indicators:create("ATR", source, N); first = ATR.DATA:first(); up = instance:addInternalStream(0, 0); dn = instance:addInternalStream(0, 0); UP=instance:addStream("UP", core.Line, name .. ".UP", "UP", instance.parameters.color1, first); UP:setWidth(instance.parameters.width); UP:setStyle(instance.parameters.style); UP:setPrecision(math.max(2, source:getPrecision())); DN=instance:addStream("DN", core.Line, name .. ".DN", "DN", instance.parameters.color2, first); DN:setWidth(instance.parameters.width); DN:setStyle(instance.parameters.style); DN:setPrecision(math.max(2, source:getPrecision())); end -- Indicator calculation routine function Update(period, mode) ATR:update(mode); if period < first then return; end local median, atr, change; atr = ATR.DATA[period]; median = (source.high[period] + source.low[period]) / 2; up[period] = median - atr * M; dn[period] = median + atr * M; if source.close[period-1]> UP[period-1] then UP[period]=math.max(up[period],UP[period-1]); else UP[period]=up[period]; end if source.close[period-1]< DN[period-1] then DN[period]=math.min(dn[period],DN[period-1]); else DN[period]=dn[period]; end end --[[ Up[i]=(H[i] + L[i] ) / 2 - (Factor*atr[i]) ; Dn[i]=(H[i] + L[i] ) / 2 + (Factor*atr[i]) ; TrendUp[i] = C[i-1] >TrendUp[i-1] ? Math.Max(Up[i],TrendUp[i-1]) : Up[i] ; TrendDown[i]= C[i-1]