-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=68482 --+------------------------------------------------------------------+ --| 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 | --+------------------------------------------------------------------+ function Init() indicator:name("Dynamic Money Flow Index"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator:setTag("group", "Volume Indicators"); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("N", "Periods", "", 14, 1, 1000); indicator.parameters:addString("Type", "MFI Method", "Method" , "Regular"); indicator.parameters:addStringAlternative("Type", "Regular", "Regular" , "Regular"); indicator.parameters:addStringAlternative("Type", "Dynamic", "Dynamic" , "Dynamic"); indicator.parameters:addGroup("Zone Calculation"); indicator.parameters:addString("Method", "MA Method", "Method" , "WMA"); indicator.parameters:addStringAlternative("Method", "MVA", "MVA" , "MVA"); indicator.parameters:addStringAlternative("Method", "EMA", "EMA" , "EMA"); indicator.parameters:addStringAlternative("Method", "LWMA", "LWMA" , "LWMA"); indicator.parameters:addStringAlternative("Method", "TMA", "TMA" , "TMA"); indicator.parameters:addStringAlternative("Method", "SMMA", "SMMA" , "SMMA"); indicator.parameters:addStringAlternative("Method", "KAMA", "KAMA" , "KAMA"); indicator.parameters:addStringAlternative("Method", "VIDYA", "VIDYA" , "VIDYA"); indicator.parameters:addStringAlternative("Method", "WMA", "WMA" , "WMA"); indicator.parameters:addInteger("Period", "RSI Period ", "", 14, 1, 2000); indicator.parameters:addInteger("Lb", "LookBack Period ", "", 60, 1, 2000); indicator.parameters:addDouble("DZbuy", "Buy Zone Probability ", "", 0.1 ); indicator.parameters:addDouble("DZsell", "Sell Zone Probability ", "", 0.1 ); indicator.parameters:addGroup("MFI Style"); indicator.parameters:addColor("clrMFI", "Indicator Line Color", "", core.rgb(255, 255, 0)); indicator.parameters:addInteger("widthMFI", "Indicator Line Width", "", 1, 1, 5); indicator.parameters:addInteger("styleMFI", "Indicator Line Style", "", core.LINE_SOLID); indicator.parameters:setFlag("styleMFI", core.FLAG_LINE_STYLE); indicator.parameters:addGroup("Zone Style"); indicator.parameters:addColor("color1", "Top Line Color", "", core.rgb(255, 0, 0)); indicator.parameters:addInteger("style1", "Line Style", "", core.LINE_DOT ); indicator.parameters:setFlag("style1", core.FLAG_LEVEL_STYLE); indicator.parameters:addInteger("width1", "Line Width", "", 1, 1, 5); indicator.parameters:addColor("color2", "Bottom Line Color", "", core.rgb(255, 0, 0)); indicator.parameters:addInteger("style2", "Line Style", "", core.LINE_DOT ); indicator.parameters:setFlag("style2", core.FLAG_LEVEL_STYLE); indicator.parameters:addInteger("width2", "Line Width", "", 1, 1, 5); indicator.parameters:addColor("color3", "Cental Line Color", "", core.rgb(128, 128, 128)); indicator.parameters:addInteger("style3", "Line Style", "", core.LINE_DOT ); indicator.parameters:setFlag("style3", core.FLAG_LEVEL_STYLE); indicator.parameters:addInteger("width3", "Line Width", "", 1, 1, 5); end local source; local N; local first; local first1; local MFI; local Prev; local POS, NEG; local Data; local Lb, DZbuy, DZsell, Method,Period,Type; local Range, Range; local Central, Top,Bottom; function Prepare(nameOnly) local name = profile:id() .. "(" .. instance.source:name() .. ")"; instance:name(name); if (nameOnly) then return; end Lb= instance.parameters.Lb; DZbuy= instance.parameters.DZbuy; DZsell= instance.parameters.DZsell; Method= instance.parameters.Method; Period= instance.parameters.Period; Type= instance.parameters.Type; source = instance.source; N = instance.parameters.N; first = source:first() + N + 1; first1 = source:first() + 1; Prev = instance.parameters.Prev; assert(source:supportsVolume(), "The source must have volume"); POS = instance:addInternalStream(0, 0); NEG = instance:addInternalStream(0, 0); Data = instance:addInternalStream(0, 0); Range = instance:addInternalStream(0, 0); Low = instance:addInternalStream(0, 0); assert(core.indicators:findIndicator(Method) ~= nil, Method .. " indicator must be installed"); MA1= core.indicators:create(Method, Low, Period); MA2= core.indicators:create(Method, Range, Period); MFI = instance:addStream("MFI", core.Line, name, "MFI", instance.parameters.clrMFI, first); MFI:setPrecision(2); MFI:setWidth(instance.parameters.widthMFI); MFI:setStyle(instance.parameters.styleMFI); MFI:addLevel(100); MFI:addLevel(80); MFI:addLevel(20); MFI:addLevel(0); Central = instance:addStream("Central" , core.Line, "Central","Central",instance.parameters.color3, first); Central:setWidth(instance.parameters.width3); Central:setStyle(instance.parameters.style3); Central:setPrecision(math.max(2, source:getPrecision())); Top = instance:addStream("Top" , core.Line, "Top","Top",instance.parameters.color1, first); Top:setWidth(instance.parameters.width1); Top:setStyle(instance.parameters.style1); Top:setPrecision(math.max(2, source:getPrecision())); Bottom = instance:addStream("Bottom" , core.Line, "Bottom","Bottom",instance.parameters.color2, first); Bottom:setWidth(instance.parameters.width2); Bottom:setStyle(instance.parameters.style2); Bottom:setPrecision(math.max(2, source:getPrecision())); end function Update(period, mode) POS[period] = 0; NEG[period] = 0; if period < first1 then return; end if source.typical[period] > source.typical[period - 1] then POS[period] = source.typical[period] * source.volume[period]; elseif source.typical[period] < source.typical[period - 1] then NEG[period] = source.typical[period] * source.volume[period]; end if period < first then return; end local a, b; a = mathex.sum(POS, period-N+1, period); b = mathex.sum(NEG, period-N+1, period); if b ~= 0 then Data[period] = 100 - (100 / (1 + a / b)); else Data[period]= 100; end --////////////////////////////////////////////////////////////////////////////////// if period < first + Lb then return; end local min,max= mathex.minmax(Data , period-Lb+1, period ); Range[period]=max-min; Low[period]=min; MA1:update(mode); MA2:update(mode); if period < first + Lb +Period then return; end Central[period] = (MA2.DATA[period]*0.50)+MA1.DATA[period]; Top[period] = max-Central[period]*DZbuy; Bottom[period] = min+Central[period]*DZsell; if Type == "Regular" then MFI[period] = Data[period] ; else MFI[period] = ( 4 * Data[period] + 3 * Data[period-1] + 2 * Data[period-2] + Data[period-3] ) / 10 ; end local R,G,B=0,0,0; if MFI[period] > Central[period] then R=0 G=255 else R=255 G=0 end MFI:setColor(period, core.rgb(R, G, B)); end