-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=60169 -- Id: 10798 --+------------------------------------------------------------------+ --| 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("Demand - Supply"); indicator:description("Demand - Supply"); indicator:requiredSource(core.Bar); indicator:type(core.Oscillator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addInteger("Period", "Period", "Period", 14); 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:addString("Type", "Algorithm Type", "Type" , "Moving Average"); indicator.parameters:addStringAlternative("Type", "Moving Average", "Moving Average" , "Moving Average"); indicator.parameters:addStringAlternative("Type", "Summarizing", "Summarizing" , "Summarizing"); indicator.parameters:addGroup("Style"); indicator.parameters:addColor("Positiv", "Color of Positiv Supply", "Color of DS", core.rgb(0, 255, 0)); indicator.parameters:addColor("Negativ", "Color of Negativ Supply", "Color of DS", 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 Period; local first; local source = nil; local Raw,MA; -- Streams block local DS = nil; local Method; local Type; -- Routine function Prepare(nameOnly) Period = instance.parameters.Period; Method = instance.parameters.Method; Type= instance.parameters.Type; source = instance.source; local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(Period).. ", " .. tostring(Method).. ", " .. tostring(Type) .. ")"; instance:name(name); if (not (nameOnly)) then Raw = instance:addInternalStream(0, 0); if Type == "Moving Average" then MA = core.indicators:create(Method, Raw, Period); first = MA.DATA:first(); else first = source:first()+Period; end DS = instance:addStream("DS", core.Bar, name, "DS", instance.parameters.Positiv, first); DS:setPrecision(math.max(2, instance.source:getPrecision())); end end -- Indicator calculation routine -- TODO: Add your code for calculation output values function Update(period, mode) local buy= (math.abs(source.close[period]-source.low[period])/(source.high[period]-source.low[period]))*source.volume[period]; local sell= (math.abs(source.high[period]-source.close[period])/(source.high[period]-source.low[period]))*source.volume[period]; Raw[period]= buy-sell; if Type == "Moving Average" then MA:update(mode); end if period < first or not source:hasData(period) then return; end if Type == "Moving Average" then DS[period] = MA.DATA[period]; elseif Type == "Summarizing" then DS[period] = mathex.sum(Raw, period-Period+1, period); end if DS[period]> 0 then DS:setColor(period, instance.parameters.Positiv); else DS:setColor(period, instance.parameters.Negativ); end end