-- Id: 21648
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=66244

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-- Indicator profile initialization routine

function Init()
    indicator:name("Equilibrium price");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
	
	indicator.parameters:addGroup("Calculation"); 
    indicator.parameters:addInteger("Period1", "Period", "", 14, 2, 2000);
 
	indicator.parameters:addString("Price1", "MA Price", "", "close");
	indicator.parameters:addStringAlternative("Price1","CLOSE", "", "close");
    indicator.parameters:addStringAlternative("Price1", "OPEN", "", "open");
    indicator.parameters:addStringAlternative("Price1", "HIGH", "", "high");
    indicator.parameters:addStringAlternative("Price1", "LOW", "", "low");    
    indicator.parameters:addStringAlternative("Price1", "MEDIAN", "", "median");
    indicator.parameters:addStringAlternative("Price1", "TYPICAL", "", "typical");
    indicator.parameters:addStringAlternative("Price1", "WEIGHTED", "", "weighted");
	
	indicator.parameters:addString("Method1", "MA Method", "Method" , "MVA");
    indicator.parameters:addStringAlternative("Method1", "MVA", "MVA" , "MVA");
    indicator.parameters:addStringAlternative("Method1", "EMA", "EMA" , "EMA");
     indicator.parameters:addStringAlternative("Method1", "LWMA", "LWMA" , "LWMA");
    indicator.parameters:addStringAlternative("Method1", "TMA", "TMA" , "TMA");
    indicator.parameters:addStringAlternative("Method1", "SMMA", "SMMA" , "SMMA");
    indicator.parameters:addStringAlternative("Method1", "KAMA", "KAMA" , "KAMA");
    indicator.parameters:addStringAlternative("Method1", "VIDYA", "VIDYA" , "VIDYA");
    indicator.parameters:addStringAlternative("Method1", "WMA", "WMA" , "WMA");
	
	 
	indicator.parameters:addGroup("Style"); 	
    indicator.parameters:addColor("color", "Line Color", "", core.rgb(255, 0, 0));
	indicator.parameters:addInteger("style", "Line Style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style", core.FLAG_LEVEL_STYLE);	
	indicator.parameters:addInteger("width", "Line Width", "", 3, 1, 5);
	
end

-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- Parameters block

local Method1, Price1, Period1;

local first;
local source = nil;
 
local Oscillator;  
local Indicator;

-- Routine
 function Prepare(nameOnly)   
 
    local name = profile:id() .. "(" ..  instance.source:name()  .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end

    Period1= instance.parameters.Period1;
    Method1= instance.parameters.Method1;
    Price1 = instance.parameters.Price1;
	
	 
			
    source = instance.source;
    
  
    assert(core.indicators:findIndicator(Method1) ~= nil, Method1 .. " indicator must be installed");
    Indicator = core.indicators:create(Method1, source[Price1], Period1);
   
    
    first= Indicator.DATA:first() ;
	
	 
   
 
	Oscillator = instance:addStream("Oscillator" , core.Line, " Oscillator"," Oscillator",instance.parameters.color, first);
	Oscillator:setWidth(instance.parameters.width);
    Oscillator:setStyle(instance.parameters.style);
    
	
	
end

-- Indicator calculation routine
function Update(period, mode)

 
 
    Indicator :update(mode);
    
	
	
    if period < first then
	return;
	end
	
		
  
	 
	   local minLow, maxHigh = mathex.minmax(source, period - Period1 + 1, period);
       local  mins = source.close[period] - minLow;
       local  maxes = maxHigh - minLow;
	   
     
     Oscillator[period] = source.close[period] +  ( 50-(mins / maxes * 100))*(maxes/100);
	 
	
	 Oscillator[period]= Oscillator[period] -( source.close[period]-Indicator.DATA[period]);
    
				  
end