CMO Abs

/*********************************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:            CMOabs  Version:            1.0  03/27/2009Formula Parameters:                     Default:    Length                              9    TopBand                             70    LowBand                             20Notes:    This indicator plots the absolute value of CMO. CMO was developed by Tushar     Chande. A scientist, an inventor, and a respected trading system developer,     Mr. Chande developed the CMO to capture what he calls "pure momentum". For     more definitive information on the CMO and other indicators we recommend the     book The New Technical Trader by Tushar Chande and Stanley Kroll.    The CMO is closely related to, yet unique from, other momentum oriented indicators     such as Relative Strength Index, Stochastic, Rate-of-Change, etc. It is most closely     related to Welles Wilder`s RSI, yet it differs in several ways:        - It uses data for both up days and down days in the numerator, thereby directly           measuring momentum;        - The calculations are applied on unsmoothed data. Therefore, short-term extreme           movements in price are not hidden. Once calculated, smoothing can be applied to           the CMO, if desired;        - The scale is bounded between +100 and -100, thereby allowing you to clearly see           changes in net momentum using the 0 level. The bounded scale also allows you to           conveniently compare values across different securities.**********************************/var fpArray = new Array();var bInit = false;function preMain() {    setPriceStudy(false);    setStudyTitle("CMO (Chandre Momentum Oscillator)");    setCursorLabelName("CMO", 0);    setDefaultBarFgColor(Color.blue, 0);    setStudyMax(101);    setStudyMin(-1);    var x=0;    fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER);	with(fpArray[x++]){        setLowerLimit(1);		        setDefault(9);    }    fpArray[x] = new FunctionParameter("TopBand", FunctionParameter.NUMBER);	with(fpArray[x++]){        setLowerLimit(1);		        setDefault(70);    }    fpArray[x] = new FunctionParameter("LowBand", FunctionParameter.NUMBER);	with(fpArray[x++]){        setLowerLimit(0);		        setDefault(20);    }}var xCMO = nullfunction main(Length, TopBand, LowBand) {var nBarState = getBarState();var nCMO = 0;    if (nBarState == BARSTATE_ALLBARS) {        if (Length == null) Length = 9;        if (TopBand == null) TopBand = 70;        if (LowBand == null) LowBand = 20;    }            if (bInit == false) {        xCMO = efsInternal("Calc_CMO", Length);        addBand(TopBand, PS_SOLID, 1, Color.red, "TopBand");        addBand(LowBand, PS_SOLID, 1, Color.brown, "LowBand");                bInit = true;    }            nCMO = xCMO.getValue(0);    if (nCMO == null) return;    return nCMO;}var xSecondInit = false;var xSMA = null;var xMOM = null;function Calc_CMO(LenCMO) {var nRes = 0;    if(xSecondInit == false){        xSMA = sma(LenCMO, efsInternal("Calc_Price"));        xMOM = mom(LenCMO);        xSecondInit = true    }    var nSMA = xSMA.getValue(0);    if (nSMA == null) return;    nRes = Math.abs(100 * (xMOM.getValue(0) / (nSMA * LenCMO)));    return nRes;    }var yMOM = null;function Calc_Price(){    if(yMOM==null) yMOM = mom(1);    return Math.abs(yMOM.getValue(0));}