Converting a study into a strategy

[eSignal_EricL]

Hi--I have a simple one: What code to add to go Long if it crosses the zero line + and go short if it crosses the zero line to make it a backtestable strategy. Thanks
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var ma = null;

function preMain()
{
setStudyTitle("Z-Score");
setCursorLabelName("Z-Score", 0);
setDefaultBarFgColor(Color.red, 0);
addBand(0, PS_SOLID, 1, Color.lightgrey);
}

function main(Period) {
var StdDev = 0;
var SumSqr = 0;
var counter = 0;

if(Period == null)
Period = 20;

if(ma == null)
ma = new MAStudy(Period, 0, "Close", MAStudy.SIMPLE);

for(counter = - Period + 1; counter <= 0; counter++)
SumSqr += Math.pow((close(counter) - ma.getValue(MAStudy.MA)),2);

StdDev = Math.sqrt(SumSqr / Period);

return (close() - ma.getValue(MAStudy.MA)) / StdDev;
}

[ACM]

elippert

After this Line
StdDev = Math.sqrt(SumSqr / Period);
you could substitute with this

var vZ = (close() -  ma.getValue(MAStudy.MA)) / StdDev;

if (vZ>0 && Strategy.isLong() == false)
Strategy.doLong("", Strategy.CLOSE, Strategy.THISBAR, Strategy.DEFAULT, 0);

if(vZ<0&&Strategy.isShort()==false)
Strategy.doShort("", Strategy.CLOSE, Strategy.THISBAR, Strategy.DEFAULT, 0);

return vZ;
} 

Alex

[eSignal_EricL]

RE: Reply to post 'Converting a study into a strategy'

Thanks Alex.

-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Friday, June 06, 2003 8:07 AM
To: [email protected]
Subject: Reply to post 'Converting a study into a strategy'


Hello elippert,

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