/*********************************************************
Alexis C. Montenegro © September 2005                     
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a 
description of any changes you make.                      
**********************************************************/

// NOTE:                                                                          
// This efs requires amStudies.efsLib in the FunctionLibrary folder.              
// If you do not have this file you can download it at the link below.            
// http://share.esignal.com/groupcontents.jsp?folder=Formulas-Libraries&groupid=10

var fpArray = new Array();

function preMain() {
    setPriceStudy(false);
    setStudyTitle("TRIX with MA");
    setCursorLabelName("TRIX",0);
    setCursorLabelName("MA-TRIX",1);
    setDefaultBarFgColor(Color.blue,0);
    setDefaultBarFgColor(Color.red,1);
    setPlotType(PLOTTYPE_LINE,0); 
    setPlotType(PLOTTYPE_LINE,1); 
    setDefaultBarThickness(1,0);
    setDefaultBarThickness(1,1);
    var x=0;
    fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER);
	with(fpArray[x++]){
        setLowerLimit(1);		
        setDefault(10);
    }
	fpArray[x] = new FunctionParameter("Source", FunctionParameter.STRING);
	with(fpArray[x++]){
        addOption("open"); 
        addOption("high");
        addOption("low");
        addOption("close");
        addOption("hl2");
        addOption("hlc3");
        addOption("ohlc4"); 
        setDefault("close"); 
    }
    fpArray[x] = new FunctionParameter("Symbol", FunctionParameter.STRING);
    with(fpArray[x++]){
        setDefault();
	}
	fpArray[x] = new FunctionParameter("Interval", FunctionParameter.STRING);
	with(fpArray[x++]){
        setDefault();
    }
    fpArray[x] = new FunctionParameter("MAType", FunctionParameter.STRING);
    with(fpArray[x++]){
        addOption("sma");
        addOption("ema");
        addOption("wma");
        setDefault("sma");
    }
	fpArray[x] = new FunctionParameter("MALength", FunctionParameter.NUMBER);
	with(fpArray[x++]){
        setLowerLimit(1);		
        setDefault(3);
    }
    fpArray[x] = new FunctionParameter("Params", FunctionParameter.BOOLEAN);
	with(fpArray[x++]){
        setName("Show Parameters");
        setDefault(false);
    }
}

var amLib = addLibrary("amStudies.efsLib");
var bInit = false;
var xTRIX = null;
var xMAofTRIX = null;

function main(Length,Source,Symbol,Interval,MAType,MALength,Params) {
    if(bInit == false){
        with( amLib ) {
            if(Symbol == null) Symbol = getSymbol();
            if(Interval == null) Interval = getInterval();
            var vSymbol = Symbol+","+Interval;
            xTRIX = getSeries(amTRIX(Length,eval(Source)(sym(vSymbol))));
            xMAofTRIX = getSeries(eval(MAType)(MALength,xTRIX));
            addBand( 0, PS_SOLID, 1, Color.black,"0");
            setShowTitleParameters(eval(Params));
            bInit = true;
        }
    }
    return new Array (xTRIX, xMAofTRIX);
}