Thrust Oscillator. I need help......

[peakskier]

I got the code from Stock and Commodities Magazine and I need help getting it to work. Here is the code as they have it:

}

var EMA_1 = 0.0;

function main(Length)
{
if(Length == null)
Length = 22
var K = 2 / (Length + 1);
var TO = 0;
var EMA = 0;
if( getValue("close","$adv") * getValue("volume","$ADV") +
getValue("close","$DECL") * getValue("volume","$DECL")!=0)
TO = (getValue("close","$ADV") *
getValue("volume","$ADV") - getValue("close","$DECL") *
getValue("volume","DECL")) / (getValue("close","$ADV") *
getValue("volume","$ADV") + getValue("close","DECL") *
getValue("volume","$DECL"));
EMA = K * TO +(1-K) * EMA_1;
if (getBarState() ==BARSTATE_NEWBAR)
EMA_1 = EMA;


return new Array(TO,EMA);
}

I have no prgramming experience so I don't know where to start. If someone could get this thing to work that would be great. Many thanks in advance.

Dave

[gspiker]

That looks like it is misssing some data.

An EFS will never start with just a } and there is no preMain(),
so I suspect that is the end statement for a preMain() routine.

Garth

[xygeek]

This plots the oscillator part but the EMA still needs work.

function preMain() {
    setCursorLabelName("TO", 0);
    setCursorLabelName("EMA", 1);
    setDefaultBarFgColor(Color.blue,0);
    setDefaultBarFgColor(Color.red,1);
}

var EMA_1 = 0.0; 

function main(Length) {
    
    if(Length == null) Length = 22
    
    var K = .5 * (Length + 1);
    var TO = 0; 
    var EMA = 0; 
    
    var advVol = getValue("volume","$ADV");
    var advClose = getValue("close","$ADV");
    var declVol = getValue("volume","$DECL");
    var declClose = getValue("close","$DECL");
    
    var numerator =   advClose * advVol - declClose * declVol; 
    var denominator = advClose * advVol + declClose * declVol; 
    if (denominator !=0) TO = numerator/denominator;
    
    EMA = K * TO +(1-K) * EMA_1;
    
    if (getBarState() == BARSTATE_NEWBAR) EMA_1 = EMA;
    
    return TO;
    
    // return new Array(TO, EMA);
} 

[eSignal_JasonK]

The completed formula can be found here