-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=1256 -- Id: --+------------------------------------------------------------------+ --| 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 | --+------------------------------------------------------------------+ -- I have simplified this indicator a bit --Indicator does not calculate the value of HA for each period alone. --Values are calculated by External function --Standard Heiken Ashi Indicator function Init() indicator:name("Price Trend Line") indicator:description("Price Trend Line") --Sets the type of the required source of the indicator Bar or Tick indicator:requiredSource(core.Bar) --Sets the type - Indicator or Oscillator. indicator:type(core.Indicator) indicator.parameters:addString("Type", "Mode", "", "highlow1"); indicator.parameters:addStringAlternative("Type", "High/low", "", "highlow1"); indicator.parameters:addStringAlternative("Type", "Close", "", "close1"); indicator.parameters:addStringAlternative("Type", "HA High/low", "", "highlow2"); indicator.parameters:addStringAlternative("Type", "HA Close", "", "close2"); indicator.parameters:addColor("Up", "Up Color", "Color", core.rgb(0, 255, 0)) indicator.parameters:addColor("Dn", "Down Color", "Color", 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) end --definition of variables local source = nil local LINE = nil local Up, Dn local first = 0 local Type local Indicator; -- Routine function Prepare(nameOnly) source = instance.source Up = instance.parameters.Up Dn = instance.parameters.Dn Type = instance.parameters.Type; local name = "Heiken Ashi Trend Line" .. "(" .. source:name() .. ")" instance:name(name) if nameOnly then return end --Creates an instance of the indicator --Calls Heiken Ashi indicator --Heiken Ashi indicator return indicator stream. if (Type == "highlow2" or Type == "close2") then Indicator= core.indicators:create("HA", source ); first = Indicator.DATA:first() + 1 else first = source:first() + 1 end --Adds a stream to the indicator output LINE = instance:addStream("Line", core.Line, name, "close", Up, first) LINE:setWidth(instance.parameters.width) LINE:setStyle(instance.parameters.style) end -- Indicator calculation routine function Update(period, mode) if period < source:first() then return end if (Type == "highlow2" or Type == "close2") then Indicator:update(mode); if Indicator.open[period] < Indicator.close[period] then if Type == "highlow2" then LINE[period] = Indicator.high[period] else LINE[period] = Indicator.close[period]; end LINE:setColor(period, Dn) else if Type == "highlow2" then LINE[period] = Indicator.low[period] else LINE[period] = Indicator.close[period]; end LINE:setColor(period, Up) end end if (Type == "highlow1" or Type== "close1") then if source.open[period] < source.close[period] then if Type == "highlow1" then LINE[period] = source.high[period] else LINE[period] = source.close[period]; end LINE:setColor(period, Dn) else if Type == "highlow1" then LINE[period] = source.low[period] else LINE[period] = source.close[period]; end LINE:setColor(period, Up) end end end