-- Id: 1780 -- The original indicator VoltyChannel_Stop_v2.1.mq4 -- Copyright � 2007, TrendLaboratory -- http://finance.groups.yahoo.com/group/TrendLaboratory -- E-mail: igorad2003@yahoo.co.uk -- v2.1. Modified by -- MODIFIED BY AVERY T. HORTON, JR. AKA THERUMPLEDONE@GMAIL.COM -- --------------------------------------------------------------------- -- This port to lua is made by http://fxcodebase.com team. -- --------------------------------------------------------------------- -- Indicator profile initialization routine -- Defines indicator profile properties and indicator parameters function Init() indicator:name("Volty Channel Stop"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator.parameters:addInteger("MA_N", "Moving Average Period", "", 1); indicator.parameters:addString("MA_M", "Moving Average Method", "The methods marked by an asterisk (*) require the appropriate indicators to be loaded.", "MVA"); indicator.parameters:addStringAlternative("MA_M", "MVA", "", "MVA"); indicator.parameters:addStringAlternative("MA_M", "EMA", "", "EMA"); indicator.parameters:addStringAlternative("MA_M", "LWMA", "", "LWMA"); indicator.parameters:addStringAlternative("MA_M", "SMMA*", "", "SMMA"); indicator.parameters:addStringAlternative("MA_M", "Vidya (1995)*", "", "VIDYA"); indicator.parameters:addStringAlternative("MA_M", "Vidya (1992)*", "", "VIDYA92"); indicator.parameters:addStringAlternative("MA_M", "Wilders*", "", "WMA"); indicator.parameters:addInteger("ATR_N", "ATR period", "", 10); indicator.parameters:addDouble("VF", "Volatility's Factor or Multiplier", "", 4); indicator.parameters:addInteger("OF", "Offset factor", "", 0); indicator.parameters:addString("P", "Price", "The price to the indicator apply to", "C"); indicator.parameters:addStringAlternative("P", "Open", "", "O"); indicator.parameters:addStringAlternative("P", "High", "", "H"); indicator.parameters:addStringAlternative("P", "Low", "", "L"); indicator.parameters:addStringAlternative("P", "Close", "", "C"); indicator.parameters:addStringAlternative("P", "Median", "", "M"); indicator.parameters:addStringAlternative("P", "Typical", "", "T"); indicator.parameters:addStringAlternative("P", "Weighted", "", "W"); indicator.parameters:addBoolean("HiLoE", "Use High/Low envelope", "", false); indicator.parameters:addBoolean("HiLoB", "Hi/Lo Break", "", true); indicator.parameters:addColor("UpBuffer_color", "Color of UpBuffer", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("DnBuffer_color", "Color of DnBuffer", "", core.rgb(255, 0, 0)); indicator.parameters:addColor("UpSignal_color", "Color of UpSignal", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("DnSignal_color", "Color of DnSignal", "", core.rgb(255, 0, 0)); end -- Indicator instance initialization routine -- Processes indicator parameters and creates output streams -- Parameters block local MA_N; local MA_M; local ATR_N; local VF; local OF; local P; local HiLoE; local HiLoB; local first; local source = nil; -- Streams block local UpBuffer = nil; local DnBuffer = nil; local UpSignal = nil; local DnSignal = nil; local SMin = nil; local SMax = nil; local Trend = nil; local BPRICE; local SPRICE; local ATR; -- Routine function Prepare() MA_N = instance.parameters.MA_N; MA_M = instance.parameters.MA_M; ATR_N = instance.parameters.ATR_N; VF = instance.parameters.VF; OF = instance.parameters.OF; P = instance.parameters.P; HiLoE = instance.parameters.HiLoE; HiLoB = instance.parameters.HiLoB; source = instance.source; local bsrc, ssrc; if HiLoE then bsrc = source.high; ssrc = source.low; else if P == "O" then bsrc = source.open; ssrc = source.open; elseif P == "H" then bsrc = source.high; ssrc = source.high; elseif P == "L" then bsrc = source.low; ssrc = source.low; elseif P == "C" then bsrc = source.close; ssrc = source.close; elseif P == "M" then bsrc = source.median; ssrc = source.median; elseif P == "T" then bsrc = source.typical; ssrc = source.typical; elseif P == "W" then bsrc = source.weighted; ssrc = source.weighted; end end assert(core.indicators:findIndicator(MA_M) ~= nil, MA_M .. " indicator must be installed"); BPRICE = core.indicators:create(MA_M, bsrc, MA_N); SPRICE = core.indicators:create(MA_M, ssrc, MA_N); ATR = core.indicators:create("ATR", source, ATR_N); first = source:first() + MA_N + ATR_N; local name = profile:id() .. "(" .. source:name() .. ", " .. MA_N .. ", " .. MA_M .. ", " .. ATR_N .. ", " .. VF .. ", " .. OF .. ", " .. P .. ")"; instance:name(name); UpBuffer = instance:addStream("UpBuffer", core.Line, name .. ".UpBuffer", "UpBuffer", instance.parameters.UpBuffer_color, first); DnBuffer = instance:addStream("DnBuffer", core.Line, name .. ".DnBuffer", "DnBuffer", instance.parameters.DnBuffer_color, first); UpSignal = instance:createTextOutput ("UpSignal", "UpSignal", "Wingdings", 10, core.H_Center, core.V_Bottom, instance.parameters.UpSignal_color, 0); DnSignal = instance:createTextOutput ("DnSignal", "DnSignal", "Wingdings", 10, core.H_Center, core.V_Top, instance.parameters.DnSignal_color, 0); SMin = instance:addInternalStream(0, 0); SMax = instance:addInternalStream(0, 0); Trend = instance:addInternalStream(0, 0); end -- Indicator calculation routine function Update(period, mode) BPRICE:update(mode); SPRICE:update(mode); ATR:update(mode); if period >= first then local bprice, sprice, atr; bprice = BPRICE.DATA[period]; sprice = SPRICE.DATA[period]; atr = ATR.DATA[period]; SMax[period] = bprice + VF * atr; SMin[period] = sprice - VF * atr; Trend[period] = Trend[period - 1]; if (HiLoB) then if source.high[period] > SMax[period - 1] then Trend[period] = 1; end if source.low[period] < SMin[period - 1] then Trend[period] = -1; end else if bprice > SMax[period - 1] then Trend[period] = 1; end if sprice < SMin[period - 1] then Trend[period] = -1; end end if Trend[period] > 0 then if SMin[period] < SMin[period - 1] then SMin[period] = SMin[period - 1]; end UpBuffer[period] = SMin[period] - (OF - 1) * atr; if UpBuffer[period] < UpBuffer[period - 1] and UpBuffer:hasData(period - 1) then UpBuffer[period] = UpBuffer[period - 1]; end if Trend[period] ~= Trend[period - 1] and Trend[period - 1] ~= 0 then UpSignal:set(period, UpBuffer[period], "\225"); end elseif Trend[period] < 0 then if SMax[period] > SMax[period - 1] then SMax[period] = SMax[period - 1]; end DnBuffer[period] = SMax[period] + (OF - 1) * atr; if DnBuffer[period] > DnBuffer[period - 1] and DnBuffer:hasData(period - 1) then DnBuffer[period] = DnBuffer[period - 1]; end if Trend[period] ~= Trend[period - 1] and Trend[period - 1] ~= 0 then DnSignal:set(period, DnBuffer[period], "\226"); end end else Trend[period] = 0; end end