-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=605 --+------------------------------------------------------------------+ --| 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 | --| 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 Indicator"); indicator:description("The indicator displays the buying and selling with the colors. The indicator is initially developed by Jason Robinson for MT4"); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("N", "Number of periods", "No description", 10); indicator.parameters:addDouble("M", "Multiplier", "No description", 1.5); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("UP_color", "Color of UP", "Color of UP", core.rgb(0, 255, 0)); indicator.parameters:addColor("DN_color", "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 Tr = nil; local UP = nil; local DN = nil; local TR = nil; -- 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(first, 0); DN = instance:addInternalStream(first, 0); TR = instance:addInternalStream(first, 0); Tr = instance:addStream("UP", core.Line, name .. ".UP", "UP", instance.parameters.UP_color, first); Tr:setWidth(instance.parameters.width); Tr:setStyle(instance.parameters.style); end -- Indicator calculation routine function Update(period, mode) ATR:update(mode); TR[period] = 1; if period >= first then 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 period >= first + 1 then change = false; if source.close[period] > UP[period - 1] then TR[period] = 1; if TR[period - 1] == -1 then change = true; end elseif source.close[period] < DN[period - 1] then TR[period] = -1; if TR[period - 1] == 1 then change = true; end else TR[period] = TR[period - 1]; end local flag, flagh; if TR[period] < 0 and TR[period - 1] > 0 then flag = 1; else flag = 0; end if TR[period] > 0 and TR[period - 1] < 0 then flagh = 1; else flagh = 0; end if TR[period] > 0 and DN[period] < DN[period - 1] then DN[period] = DN[period - 1]; end if TR[period] < 0 and UP[period] > UP[period - 1] then UP[period] = UP[period - 1]; end if flag == 1 then UP[period] = median + atr * M; end if flagh == 1 then DN[period] = median - atr * M; end if TR[period] == 1 then Tr[period] = DN[period]; Tr:setColor(period, instance.parameters.UP_color); end if TR[period] == -1 then Tr[period] = UP[period]; Tr:setColor(period, instance.parameters.DN_color); end end end end