-- Id: 2647 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=2961 --+------------------------------------------------------------------+ --| 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 | --+------------------------------------------------------------------+ -- Indicator profile initialization routine -- Defines indicator profile properties and indicator parameters -- TODO: Add minimal and maximal value of numeric parameters and default color of the streams function Init() indicator:name("KAMA Oscillator"); indicator:description("KAMA Oscillator"); indicator:requiredSource(core.Tick); indicator:type(core.Oscillator); indicator.parameters:addInteger("SF", "Short Period", "", 20,2, 2000); indicator.parameters:addInteger("LP", "Long Period", "", 100, 2, 2000); indicator.parameters:addColor("KO_Up", "Color of KO Up", "", core.rgb(0, 255, 0)); indicator.parameters:addColor("KO_Down", "Color of KO Down", "", core.rgb(255, 0, 0)); 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 SF; local LP; local Short, Long; local first; local source = nil; -- Streams block local UP = nil; local DOWN = nil; -- Routine function Prepare(nameOnly) SF = instance.parameters.SF; LP = instance.parameters.LP; source = instance.source; local name = profile:id() .. "(" .. source:name() .. ", " .. SF .. ", " .. LP .. ")"; instance:name(name); if (nameOnly) then return; end Short = core.indicators:create("KAMA", source, SF); Long = core.indicators:create("KAMA", source, LP); first = math.max(Short.DATA:first(),Long.DATA:first()); UP = instance:addStream("Up", core.Bar, name, "Up", instance.parameters.KO_Up, first); DOWN = instance:addStream("Down", core.Bar, name, "Down", instance.parameters.KO_Down, first); UP:setPrecision(math.max(2, instance.source:getPrecision())); DOWN:setPrecision(math.max(2, instance.source:getPrecision())); end -- Indicator calculation routine -- TODO: Add your code for calculation output values function Update(period, mode) if period >= first and source:hasData(period) then Short:update(mode); Long:update(mode); local F = Long.DATA[period] -Short.DATA[period]; local L = Long.DATA[period-1] -Short.DATA[period-1]; if F > L then UP[period] = F; DOWN[period] = nil; else DOWN[period] = F; UP[period] = nil; end end end