-- Id: 1853 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=949 --+------------------------------------------------------------------+ --| 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 | --+------------------------------------------------------------------+ --| Patreon : https://goo.gl/GdXWeN | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ function Init() indicator:name("Slope direction line"); indicator:description("Slope direction line"); indicator:requiredSource(core.Tick); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Period", "Period", "Period", 80); indicator.parameters:addString("Method", "Method", "", "EMA"); indicator.parameters:addStringAlternative("Method", "MVA", "", "MVA"); indicator.parameters:addStringAlternative("Method", "EMA", "", "EMA"); indicator.parameters:addStringAlternative("Method", "KAMA", "", "KAMA"); indicator.parameters:addStringAlternative("Method", "LWMA", "", "LWMA"); indicator.parameters:addStringAlternative("Method", "TMA", "", "TMA"); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("clrUp", "Color of Slope Direction Line (UP)", "Color of Slope Direction Line (Up)", core.rgb(0, 255, 0)); indicator.parameters:addColor("clrDn", "Color of Slope Direction Line (Dn)", "Color of Slope Direction Line (Dn)", 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 local first; local source = nil; local MA; local MA2; local Period; local Method; local vect; local MA_A; local trend; local SDL; function Prepare(nameOnly) source = instance.source; Period=instance.parameters.Period; Method=instance.parameters.Method; vect = instance:addInternalStream(0, 0); trend = instance:addInternalStream(0, 0); SDL = instance:addInternalStream(0, 0); assert(core.indicators:findIndicator(Method) ~= nil, Method .. " indicator must be installed"); MA = core.indicators:create(Method, source, Period); MA2 = core.indicators:create(Method, source, math.floor(Period/2)); first1 = math.max(MA.DATA:first(),MA2.DATA:first() ); MA_A = core.indicators:create(Method, vect, math.floor(math.sqrt(Period))); first2=MA_A.DATA:first(); local name = profile:id() .. "(" .. source:name() .. ", " .. Period .. ", " .. Method .. ")"; instance:name(name); if (nameOnly) then return; end UpTrend = instance:addStream("UpTrend", core.Line, name .. ".UpTrend", "UpTrend", instance.parameters.clrUp, first2); UpTrend:setWidth(instance.parameters.width); UpTrend:setStyle(instance.parameters.style); DnTrend = instance:addStream("DnTrend", core.Line, name .. ".DnTrend", "DnTrend", instance.parameters.clrDn, first2); DnTrend:setWidth(instance.parameters.width); DnTrend:setStyle(instance.parameters.style); end function Update(period, mode) if period < first1 then return; end MA:update(mode); MA2:update(mode); vect[period]=2.*MA2.DATA[period]-MA.DATA[period]; if period < first2 then return; end MA_A:update(mode); SDL[period]=MA_A.DATA[period]; trend[period]=trend[period-1]; if SDL[period]>SDL[period-1] then trend[period]=1; end if SDL[period]0 then UpTrend[period]=SDL[period]; if trend[period-1]<0 then UpTrend[period-1]=SDL[period-1]; end DnTrend[period]=nil; end if trend[period]<0 then DnTrend[period]=SDL[period]; if trend[period-1]>0 then DnTrend[period-1]=SDL[period-1]; end UpTrend[period]=nil; end end