2011 Oct: The JK HiLo Index

JK_HiLO.efs  
EFSLibrary - Discussion Board  

File Name: JK_HiLO.efs

Description:
The JK HiLo Index

Formula Parameters:

• Index: NASDAQ
• Period: 10

Notes:
The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.

Download File:
JK_HiLO.efs


EFS Code:

/*********************************
Provided By:  
    Interactive Data Corporation (Copyright © 2010) 
    All rights reserved. This sample eSignal Formula Script (EFS)
    is for educational purposes only. Interactive Data Corporation
    reserves the right to modify and overwrite this EFS file with 
    each new release. 
	
Description:        
    The JK HiLo Index
 
Version:            1.0  15/08/2011

Formula Parameters:                     Default:
Index:                                  NASDAQ
Period:                                 10

Notes:
    The related article is copyrighted material. If you are not
    a subscriber of Stocks & Commodities, please visit www.traders.com.

**********************************/

var bVersion = null;
var fpArray = new Array();
function preMain()
{
    setCursorLabelName("JK_HiLo");

    var x = 0;
    fpArray[x] = new FunctionParameter("gIndex", FunctionParameter.STRING);
    with (fpArray[x++])
    {
            setName("Index");
            addOption("AMEX"); 
            addOption("NYSE");
            addOption("NASDAQ");
            setDefault("NASDAQ");
    }
    fpArray[x] = new FunctionParameter("gPeriod", FunctionParameter.INTEGER);
    with (fpArray[x++])
    {
            setName("Average Period");
            setDefault(10);
    }
}

var xEH = null;
var xF = null;
var xI = null;
var bInit = false; 
function main(gIndex, gPeriod)
{
    if (bVersion == null) bVersion = verify();
    if (bVersion == false) return;
    if (getBarState()==BARSTATE_ALLBARS)
    {
            addBand(20, PS_DOT, 1, Color.grey, "l20");
            addBand(90, PS_DOT, 1, Color.grey, "l90");
    }
    if ( !bInit )
    {
        xEH = efsInternal("calcIndexes", gIndex) 
        xF = sma(gPeriod, getSeries(xEH, 0));
        xI = sma(gPeriod, getSeries(xEH, 1));
        bInit = true; 
    }
    var vF = xF.getValue(0);
    if ( vF == null ) return;
    var vG = ((vF>=2.15)||(vF<=0.4))? vF : 1;
    var vI = xI.getValue(0);
    return vI*vG*100;
}

function calcIndexes(sIndex)
{
    var extension = "";

    if ( sIndex == "NASDAQ" )  extension = "NQ-ST"
    else if( sIndex == "AMEX" )  extension = "AM-ST"
    else if( sIndex == "NYSE" )  extension = "NY-ST"

    var xA = close(sym("$ACTV."+extension));
    var xB = close(sym("$YRHI."+extension));
    var xC = close(sym("$YRLO."+extension));
    
    var vA = xA.getValue(0);
    var vB = xB.getValue(0);
    var vC = xC.getValue(0);
    
    return new Array (100*Math.min(vB, vC)/vA, vB/(vB+vC));
}

function verify() {
    var b = false;
    if (getBuildNumber() < 779) {
        drawTextAbsolute(5, 35, "This study requires version 8.0 or later.", 
            Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
            null, 13, "error");
        drawTextAbsolute(5, 20, "Click HERE to upgrade.@URL=http://www.esignal.com/download/default.asp", 
            Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
            null, 13, "upgrade");
        return b;
    } else {
        b = true;
    }
    return b;
}