-- Id: 3354 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=3664 --+------------------------------------------------------------------+ --| 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 | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ function Init() indicator:name("Overbought/Oversold Indicator"); indicator:description("Shows the overbought and oversold conditions."); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("PERIOD", "Period", "", 9); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("UP_color", "Up Color", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("DN_color", "Down Color","", core.rgb(255, 0, 0)); indicator.parameters:addColor("OB_color", "OB/OS Color", "", core.rgb(0, 0, 255)); end local PERIOD; local first; local source = nil; local open,low, high, close; local MA = {}; local BUFFER = {}; local BUFFER3, BUFFER4; local UP, DOWN; function Prepare(nameOnly) PERIOD = instance.parameters.PERIOD; source = instance.source; first = source:first(); local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(PERIOD) .. ")"; instance:name(name); if (nameOnly) then return; end BUFFER[1] = instance:addInternalStream(source:first(), 0); MA[1] = core.indicators:create("EMA", BUFFER[1], PERIOD); BUFFER[5] = instance:addInternalStream(MA[1].DATA:first() + PERIOD, 0); MA[2] = core.indicators:create("EMA", BUFFER[5], PERIOD); BUFFER[6] = instance:addInternalStream(MA[2].DATA:first(), 0); MA[3] = core.indicators:create("EMA", BUFFER[6], PERIOD); UP = instance:addInternalStream( MA[3].DATA:first(), 0); MA[4] = core.indicators:create("EMA", UP, PERIOD); open = instance:addStream("open", core.Line, name, "open", core.rgb(128, 128, 128), MA[4].DATA:first()); open:setPrecision(math.max(2, instance.source:getPrecision())); high = instance:addStream("high", core.Line, name, "high", core.rgb(128, 128, 128), MA[4].DATA:first()); high:setPrecision(math.max(2, instance.source:getPrecision())); low = instance:addStream("low", core.Line, name, "low", core.rgb(128, 128, 128), MA[4].DATA:first()); low:setPrecision(math.max(2, instance.source:getPrecision())); close = instance:addStream("close", core.Line, name, "close", core.rgb(128, 128, 128), MA[4].DATA:first()); close:setPrecision(math.max(2, instance.source:getPrecision())); instance:createCandleGroup("OBOS", "", open, high, low, close); end -- Indicator calculation routine function Update(period,mode) if period < first or not source:hasData(period) then return; end BUFFER[1][period] = (source.high[period] + source.low[period] + source.close[period] * 2) / 4; MA[1]:update(mode); if period < MA[1].DATA:first() then return; end BUFFER3 = MA[1].DATA[period]; if period < MA[1].DATA:first() + PERIOD then return; end BUFFER4 = mathex.stdev(BUFFER[1], period - PERIOD, period); BUFFER[5][period] = (BUFFER[1][period] - BUFFER3) * 100 / BUFFER4; MA[2]:update(mode); if period < MA[2].DATA:first() then return; end BUFFER[6][period] = MA[2].DATA[period]; MA[3]:update(mode); if period < MA[3].DATA:first() then return; end UP[period] = MA[3].DATA[period]; MA[4]:update(mode); if period < MA[4].DATA:first() then return; end DOWN = MA[4].DATA[period]; if UP[period] < DOWN then close[period] = UP[period]; open[period] = DOWN; else open[period] = DOWN; close[period] = UP[period]; end high[period] = math.max(open[period],close[period]); low[period] = math.min(open[period],close[period]); if open[period - 1] < open[period] and close[period-1] < close[period ] then open:setColor(period, instance.parameters.UP_color); elseif open[period - 1] > open[period] and close[period-1] > close[period ] then open:setColor(period, instance.parameters.DN_color); else open:setColor(period, instance.parameters.OB_color); end end