-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=34141 -- Id: 8912 --+------------------------------------------------------------------+ --| 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("%B of On-Balance Volume"); indicator:description("%B of On-Balance Volume"); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Period", "Period", "Period", 33); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("OBV_color", "Color of Line", "Color of Line", 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 -- Indicator instance initialization routine -- Processes indicator parameters and creates output streams -- TODO: Refine the first period calculation for each of the output streams. -- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries -- Parameters block local Period; local first; local source = nil; -- Streams block local OBD = nil; local obv, MA, MA2; -- Routine function Prepare(nameOnly) Period = instance.parameters.Period; source = instance.source; local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(Period) .. ")"; instance:name(name); if (nameOnly) then return; end obv = instance:addInternalStream(0, 0); MA2 = core.indicators:create("MVA", obv, Period); first = math.max( Period, MA2.DATA:first()) ; OBD = instance:addStream("OBV", core.Line, name, "OBV", instance.parameters.OBV_color, first); OBD:setWidth(instance.parameters.width); OBD:setStyle(instance.parameters.style); OBD:setPrecision(math.max(2, source:getPrecision())); end -- Indicator calculation routine -- TODO: Add your code for calculation output values function Update(period, mode) OBV(period); MA2:update(mode); if period < first then return; end local std2 = mathex.stdev(obv, period-Period+1, period); local FormulaB, FormulaA; FormulaB=1+((obv[period]-(MA2.DATA[period]-(2*(std2))))/(MA2.DATA[period] +(2*(std2))-(MA2.DATA[period]-(2*(std2))))) OBD[period] = FormulaB; end function OBV(period) if source.close[period] > source.close[period - 1] then obv[period] = obv[period - 1] + source.volume[period]; elseif source.close[period] < source.close[period - 1] then obv[period] = obv[period - 1] - source.volume[period]; else obv[period] = obv[period - 1]; end end