-- Id: 3904 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=606 --+------------------------------------------------------------------+ --| Copyright © 2018, Gehtsoft USA LLC | --| http://fxcodebase.com | --+------------------------------------------------------------------+ --| Support our efforts by donating | --| Patreon : https://goo.gl/GdXWeN | --| Paypal : https://goo.gl/9Rj74e | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash : 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ function Init() indicator:name("Heikin-Ashi Smoothed"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator:setTag("group", "Trend"); indicator:setTag("replaceSource", "t"); indicator.parameters:addGroup("Calculation"); indicator.parameters:addString("Method1", "The smoothing method for prices", "The methods marked by the star (*) requires to have approriate indicators installed", "MVA"); indicator.parameters:addStringAlternative("Method1", "MVA", "", "MVA"); indicator.parameters:addStringAlternative("Method1", "EMA", "", "EMA"); indicator.parameters:addStringAlternative("Method1", "LWMA", "", "LWMA"); indicator.parameters:addStringAlternative("Method1", "SMMA*", "", "SMMA"); indicator.parameters:addStringAlternative("Method1", "Vidya (1995)*", "", "VIDYA"); indicator.parameters:addStringAlternative("Method1", "Vidya (1992)*", "", "VIDYA92"); indicator.parameters:addStringAlternative("Method1", "Wilders*", "", "WMA"); indicator.parameters:addInteger("N1", "Periods to smooth prices", "", 6, 1, 1000); indicator.parameters:addString("Method2", "The smoothing method for candles", "The methods marked by the star (*) requires to have approriate indicators installed", "MVA"); indicator.parameters:addStringAlternative("Method2", "MVA", "", "MVA"); indicator.parameters:addStringAlternative("Method2", "EMA", "", "EMA"); indicator.parameters:addStringAlternative("Method2", "LWMA", "", "LWMA"); indicator.parameters:addStringAlternative("Method2", "SMMA*", "", "SMMA"); indicator.parameters:addStringAlternative("Method2", "Vidya (1995)*", "", "VIDYA"); indicator.parameters:addStringAlternative("Method2", "Vidya (1992)*", "", "VIDYA92"); indicator.parameters:addStringAlternative("Method2", "Wilders*", "", "WMA"); indicator.parameters:addInteger("N2", "Periods to smooth candles", "", 6, 1, 1000); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("UP", "Color of Up Candel", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("DOWN", "Color of Down Candle", "", core.rgb(255, 0, 0)); end local smopen = nil; local smhigh = nil; local smlow = nil; local smclose = nil; local iopen = nil; local ihigh = nil; local ilow = nil; local iclose = nil; local smiopen = nil; local smihigh = nil; local smilow = nil; local smiclose = nil; local open = nil; local high = nil; local low = nil; local close = nil; local first1 = 0; local first2 = 0; local UP, DOWN; -- Routine function Prepare(nameOnly) source = instance.source; -- was missing, so N1 was not set local N1 = instance.parameters.N1; UP = instance.parameters.UP; DOWN = instance.parameters.DOWN; local name = "Heikin-Ashi Smoothed" .. "(" .. source:name() .. "," .. instance.parameters.Method1 .. "(" .. instance.parameters.N1 .. ")," .. instance.parameters.Method2 .. "(" .. instance.parameters.N2.. "))" instance:name(name); if nameOnly then return; end assert(core.indicators:findIndicator(instance.parameters.Method1) ~= nil, instance.parameters.Method1 .. " indicator must be installed"); smopen = core.indicators:create(instance.parameters.Method1, source.open, N1); smclose = core.indicators:create(instance.parameters.Method1, source.close, N1); smhigh = core.indicators:create(instance.parameters.Method1, source.high, N1); smlow = core.indicators:create(instance.parameters.Method1, source.low, N1); first1 = smopen.DATA:first() + 1; iopen = instance:addInternalStream(first1, 0); iclose = instance:addInternalStream(first1, 0); ihigh = instance:addInternalStream(first1, 0); ilow = instance:addInternalStream(first1, 0); -- was missing, so N2 was not set local N2 = instance.parameters.N2; assert(core.indicators:findIndicator(instance.parameters.Method2) ~= nil, instance.parameters.Method2 .. " indicator must be installed"); smiopen = core.indicators:create(instance.parameters.Method2, iopen, N2); smiclose = core.indicators:create(instance.parameters.Method2, iclose, N2); smihigh = core.indicators:create(instance.parameters.Method2, ihigh, N2); smilow = core.indicators:create(instance.parameters.Method2, ilow, N2); first2 = smiopen.DATA:first() + 1; open = instance:addStream("open", core.Line, name, "open", core.rgb(0, 0, 0), first2) high = instance:addStream("high", core.Line, name, "high", core.rgb(0, 0, 0), first2) low = instance:addStream("low", core.Line, name, "low", core.rgb(0, 0, 0), first2) close = instance:addStream("close", core.Line, name, "close", core.rgb(0, 0, 0), first2) instance:createCandleGroup("HAS", "HAS", open, high, low, close); end -- Indicator calculation routine function Update(period, mode) -- smooth source smopen:update(mode); smhigh:update(mode); smlow:update(mode); smclose:update(mode); if period >= first1 then -- calculate candles if (period == first1) then iopen[period] = (smopen.DATA[period - 1] + smclose.DATA[period - 1]) / 2; else iopen[period] = (iopen[period - 1] + iclose[period - 1]) / 2; end iclose[period] = (smopen.DATA[period] + smhigh.DATA[period] + smlow.DATA[period] + smclose.DATA[period]) / 4; ihigh[period] = math.max(iopen[period], iclose[period], smhigh.DATA[period]); ilow[period] = math.min(iopen[period], iclose[period], smlow.DATA[period]); -- smooth candles smiopen:update(mode); smihigh:update(mode); smilow:update(mode); smiclose:update(mode); end if period >= first2 then open[period] = smiopen.DATA[period]; close[period] = smiclose.DATA[period]; high[period] = math.max(open[period], close[period], smihigh.DATA[period]); low[period] = math.min(open[period], close[period], smilow.DATA[period]); if open[period] > close[period] then open:setColor(period, DOWN); elseif open[period] < close[period] then open:setColor(period, UP); else open:setColor(period, core.rgb(128, 128, 128)); end end end