2005 Feb: The Truth About Volatility

[eSignal_JasonK]

File Name: VolatilityEntryAdvisor.efs, VolatilityProfitIndicator.efs, VolatilityTrailingStopP15.efs

Description:
These indicators are based on the February 2005 article, The Truth About Volatility, by Jim Berg.

Formula Parameters:
VolatilityEntryAdvisor.efs
ATR Periods: 10
LL and HH Periods: 20
Thickness: 2

VolatilityProfitIndicator.efs
ATR Periods: 10
MA Periods: 13
Thickness: 2

VolatilityTrailingStopP15.efs
ATR Periods: 10
Thickness: 2



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


Download File:
VolatilityEntryAdvisor.efs
VolatilityProfitIndicator.efs
VolatilityTrailingStopP15.efs





EFS Code:

/*************************
Provided By : eSignal (c) Copyright 2004
Description:  Volatility Entry Advisor - by Jim Berg

Version 1.1

Notes:
2/15/2005 - Added setComputeOnClose()

February 2005 Issue - "The Truth About Volatility"

Formula Parameters:                 Defaults:
ATR Periods                         10
LL and HH Periods                   20
Thickness                           2
*************************/

function preMain() {
    setPriceStudy(true);
    setStudyTitle("Volatility Entry Advisor ");
    setCursorLabelName("Entry", 0);
    setCursorLabelName("Exit", 1);
    setDefaultBarThickness(2, 0);
    setDefaultBarThickness(2, 1);
    setDefaultBarFgColor(Color.green, 0);
    setDefaultBarFgColor(Color.khaki, 1);
    
    setColorPriceBars(true);
    setDefaultPriceBarColor(Color.grey);
    setComputeOnClose();
    
    setShowTitleParameters(false);
    
    // Formula Parameters
    var fp1 = new FunctionParameter("nATRlen", FunctionParameter.NUMBER);
        fp1.setName("ATR Periods");
        fp1.setLowerLimit(1);
        fp1.setDefault(10);
    var fp2 = new FunctionParameter("nDonlen", FunctionParameter.NUMBER);
        fp2.setName("LL and HH Periods");
        fp2.setLowerLimit(1);
        fp2.setDefault(20);

    // Study Parameters
    var sp1 = new FunctionParameter("nThick", FunctionParameter.NUMBER);
        sp1.setName("Thickness");
        sp1.setDefault(2);
}

var bEdit = true;
var vATR = null;
var vDonchian = null;
var vColor = Color.grey;

function main(nATRlen, nDonlen, nThick) {
    if (bEdit == true) {
        vATR = new ATRStudy(nATRlen);
        vDonchian = new DonchianStudy(nDonlen, 0);
        setDefaultBarThickness(nThick, 0);
        setDefaultBarThickness(nThick, 1);
        bEdit = false;
    }
    
    var nState = getBarState();
    if (nState == BARSTATE_NEWBAR) {
    }
    
    var ATR = vATR.getValue(ATRStudy.ATR);
    var HHV = vDonchian.getValue(DonchianStudy.UPPER);
    var LLV = vDonchian.getValue(DonchianStudy.LOWER);
    if (ATR == null || HHV == null || LLV == null) return;
    
    var vEntryLine = LLV+(2*ATR);
    var vExitLine = HHV-(2*ATR);
    var c = close();
    
    if (c > vEntryLine) {
        vColor = Color.blue;
    } else if (c < vExitLine) {
        vColor = Color.red;
    }
    setPriceBarColor(vColor);
    
    //return;
    return new Array(vEntryLine, vExitLine);
}


/*************************
Provided By : eSignal (c) Copyright 2004
Description:  Volatility Profit Indicator - by Jim Berg

Version 1.0

Notes:
February 2005 Issue - "The Truth About Volatility"

Formula Parameters:                 Defaults:
ATR Periods                         10
MA Periods                          13
Thickness                           2
*************************/

function preMain() {
    setPriceStudy(true);
    setStudyTitle("Volatility Profit Indicator ");
    setCursorLabelName("VProfit", 0);
    setDefaultBarThickness(2, 0);
    setDefaultBarFgColor(Color.lime, 0);
    
    setShowTitleParameters(false);
    
    // Formula Parameters
    var fp1 = new FunctionParameter("nATRlen", FunctionParameter.NUMBER);
        fp1.setName("ATR Periods");
        fp1.setLowerLimit(1);
        fp1.setDefault(10);
    var fp2 = new FunctionParameter("nMovlen", FunctionParameter.NUMBER);
        fp2.setName("MA Periods");
        fp2.setLowerLimit(1);
        fp2.setDefault(13);

    // Study Parameters
    var sp1 = new FunctionParameter("nThick", FunctionParameter.NUMBER);
        sp1.setName("Thickness");
        sp1.setDefault(2);
}

var bEdit = true;
var vATR = null;
var vMA = null;

function main(nATRlen, nMovlen, nThick) {
    if (bEdit == true) {
        vATR = new ATRStudy(nATRlen);
        vMA = new MAStudy(nMovlen, 0, "High", MAStudy.EXPONENTIAL);
        setDefaultBarThickness(nThick, 0);
        bEdit = false;
    }
    
    var nState = getBarState();
    if (nState == BARSTATE_NEWBAR) {
    }
    
    var ATR = vATR.getValue(ATRStudy.ATR);
    var MA = vMA.getValue(MAStudy.MA);
    if (ATR == null || MA == null) return;
    
    var vProfitLine = (MA + (2*ATR));
    
    return vProfitLine;
}


/*************************
Provided By : eSignal (c) Copyright 2004
Description:  Volatility Trailing Stop P15 - by Jim Berg

Version 1.0

Notes:
February 2005 Issue - "The Truth About Volatility"

Formula Parameters:                 Defaults:
ATR Periods                         10
Thickness                           2
*************************/

function preMain() {
    setPriceStudy(true);
    setStudyTitle("Volatility Trailing Stop P15 ");
    setCursorLabelName("VStop", 0);
    setDefaultBarThickness(2, 0);
    setDefaultBarFgColor(Color.red, 0);
    
    setShowTitleParameters(false);
    
    // Formula Parameters
    var fp1 = new FunctionParameter("nATRlen", FunctionParameter.NUMBER);
        fp1.setName("ATR Periods");
        fp1.setLowerLimit(1);
        fp1.setDefault(10);

    // Study Parameters
    var sp1 = new FunctionParameter("nThick", FunctionParameter.NUMBER);
        sp1.setName("Thickness");
        sp1.setDefault(2);
}

var bEdit = true;
var vATR = null;
var aStop = new Array(15);

function main(nATRlen, nThick) {
    if (bEdit == true) {
        vATR = new ATRStudy(nATRlen);
        setDefaultBarThickness(nThick, 0);
        bEdit = false;
    }
    
    var nState = getBarState();
    if (nState == BARSTATE_NEWBAR) {
        aStop.pop();
        aStop.unshift(0);
    }
    
    var ATR = vATR.getValue(ATRStudy.ATR);
    if (ATR == null) return;
    
    var c = close();
    var vStop = (c - (2*ATR));
    aStop[0] = vStop;
    
    var vStop15 = vStop;
    for (var i = 0; i < 15; i++) {
        vStop15 = Math.max(aStop[i], vStop15);
    }
    
    return vStop15;
}