-- Id: 9943 -- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=59441 --+------------------------------------------------------------------+ --| 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("Rainbow Chart"); indicator:description("Rainbow Chart"); indicator:requiredSource(core.Tick); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Number", "Number of MAs", "Number of MAs", 10); indicator.parameters:addInteger("Period", "MA Period", "MA Period", 2); indicator.parameters:addString("Method", "MA Method", "Method" , "MVA"); 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:addGroup("Style"); 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 Number; local Period; local Method; local first={}; local source = nil; local ma={}; -- Streams block local MA = {}; -- Routine function Prepare(nameOnly) Method = instance.parameters.Method; Number = instance.parameters.Number; Period = instance.parameters.Period; source = instance.source; local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(Number) .. ", " .. tostring(Period) .. ")"; instance:name(name); if (not (nameOnly)) then local i; for i = 1, Number, 1 do assert(core.indicators:findIndicator(Method) ~= nil, Method .. " indicator must be installed"); if i == 1 then ma[i] = core.indicators:create(Method, source, Period); else ma[i] = core.indicators:create(Method, ma[i-1].DATA, Period); end first[i] = ma[i].DATA:first(); MA[i] = instance:addStream("MA"..i, core.Line, name, "MA ".. i, Coloring (( 100/Number)*i, 50), first[i]); MA[i]:setWidth(instance.parameters.width); MA[i]:setStyle(instance.parameters.style); end end end -- Indicator calculation routine -- TODO: Add your code for calculation output values function Update(period, mode) if not source:hasData(period) then return; end local i; for i = 1, Number, 1 do ma[i]:update(mode); if period >= first[i] then MA[i][period] = ma[i].DATA[period]; end end end function Coloring (value, mid) local color; if value <= mid then color = core.rgb(255 * (value / mid), 255, 0) else color = core.rgb(255, 255 - 255 * ((value - mid) / mid), 0) end return color; end