2003 Jan: Moving Trend (Rafter Indicator)

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File Name: rafter.efs


Description:
Moving Trend (Rafter Indicator)


Formula Parameters:
N : 20

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


Download File:
rafter.efs




EFS Code:




/*********************************Provided By:      eSignal (Copyright c eSignal), a division of Interactive Data     Corporation. 2009. All rights reserved. This sample eSignal     Formula Script (EFS) is for educational purposes only and may be     modified and saved under a new file name.  eSignal is not responsible    for the functionality once modified.  eSignal reserves the right     to modify and overwrite this EFS file with each new release.Description:            Moving Trend (Rafter Indicator)    Version:            1.0  05/19/2009     Formula Parameters:                     Default:    N                                   20    Notes:    The related article is copyrighted material. If you are not a subscriber    of Stocks & Commodities, please visit www.traders.com.**********************************/var fpArray = new Array();var bInit = false;function preMain() {    setStudyTitle("Movtrend");    setCursorLabelName("Movtrend", 0);    setDefaultBarFgColor(Color.blue, 0);    setPriceStudy(true);    var x = 0;    fpArray[x] = new FunctionParameter("n", FunctionParameter.NUMBER);    with(fpArray[x++]) {        setName("N");        setLowerLimit(1);        setDefault(20);    }    }var xMovTrend = null;function main(n) {var nBarState = getBarState();var nMovTrend = 0;    if (nBarState == BARSTATE_ALLBARS) {        if(n == null)  n = 20;	}		if (bInit == false) {        xMovTrend = efsInternal("MovTrend", n);        bInit = true;	}	nMovTrend = xMovTrend.getValue(0);	if (nMovTrend == false) return;    return nMovTrend; }var xClose = null;function MovTrend(n) {var nRes = 0;var sum = 0;var i = 0;	if (xClose == null) xClose = close();	if (xClose.getValue(-n) == null) return;	for(i = n; i > 0; i--)		sum += (i - (n + 1) / 3) * xClose.getValue(i - n);	nRes = 6 / (n * (n + 1)) * sum;	return nRes;}