MA Percent Channel

MAPercentChannel.efs  
EFSLibrary - Discussion Board  

File Name: MAPercentChannel.efs

Description:
MA Percent Channel

Formula Parameters:

• MA Method : SMA
• MA Price Source : CLOSE
• Length : 55
• Shift : 0
• Deviation : 1

Notes:

Download File:
MAPercentChannel.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:        
    MA Percent Channel 
Version:            1.0  06/25/2009
 
Formula Parameters:                     Default:
    MA Method                           SMA
    MA Price Source                     CLOSE
    Length                              55
    Shift                               0
    Deviation                           1
    
Notes:
    
**********************************/
var fpArray = new Array();
var bInit = false;

function preMain(){
    setPriceStudy(true);
    setShowCursorLabel(true);
    setShowTitleParameters(false);
    setStudyTitle("MA Percent Channel");
    setCursorLabelName("U1", 0);
    setDefaultBarFgColor(Color.blue, 0);
    setPlotType(PLOTTYPE_LINE, 0);
    setDefaultBarThickness(1, 0);
    setCursorLabelName("U2", 1);
    setDefaultBarFgColor(Color.blue, 1);
    setPlotType(PLOTTYPE_LINE, 1);
    setDefaultBarThickness(1, 1);
    setCursorLabelName("U3", 2);
    setDefaultBarFgColor(Color.blue, 2);
    setPlotType(PLOTTYPE_LINE, 2);
    setDefaultBarThickness(2, 2);
    setCursorLabelName("D1", 3);
    setDefaultBarFgColor(Color.red, 3);
    setPlotType(PLOTTYPE_LINE, 3);
    setDefaultBarThickness(1, 3);
    setCursorLabelName("D2", 4);
    setDefaultBarFgColor(Color.red, 4);
    setPlotType(PLOTTYPE_LINE, 4);
    setDefaultBarThickness(1, 4);
    setCursorLabelName("D3", 5);
    setDefaultBarFgColor(Color.red, 5);
    setPlotType(PLOTTYPE_LINE, 5);
    setDefaultBarThickness(2, 5);
    setCursorLabelName("LB", 6);
    setDefaultBarFgColor(Color.green, 6);
    setPlotType(PLOTTYPE_LINE, 6);
    setDefaultBarThickness(2, 6);
    var x = 0;
    fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER);
    with(fpArray[x++]) {
        setLowerLimit(1);
        setDefault(55);
    }    
    fpArray[x] = new FunctionParameter("Shift", FunctionParameter.NUMBER);
    with(fpArray[x++]) {
        setLowerLimit(0);
        setDefault(0);
    }        
    fpArray[x] = new FunctionParameter("Deviation", FunctionParameter.NUMBER);
    with(fpArray[x++]) {
        setLowerLimit(1);
        setDefault(1);
    }        
    fpArray[x] = new FunctionParameter("sMAType", FunctionParameter.STRING);
    with(fpArray[x++]) {
        setName("MA Method");
        addOption("sma");
        addOption("ema");
        addOption("wma");
        addOption("vwma");
        setDefault("sma");
    }
    fpArray[x] = new FunctionParameter("sMAPriceSource", FunctionParameter.STRING);
    with(fpArray[x++]) {
        setName("MA Price Source");
        addOption("open");
        addOption("high");
        addOption("low");
        addOption("close");
        addOption("hl2");
        addOption("hlc3"); 
        addOption("ohlc4");
        setDefault("close");
    }
}

var xMA = null;

function main(sMAType, sMAPriceSource, Length, Shift, Deviation) {
var nBarState = getBarState();
var nMA1 = 0;
var nMA2 = 0;
var nMA3 = 0;
var nMA4 = 0;
var nMA5 = 0;
var nMA6 = 0;
var nMA7 = 0;
    if (nBarState == BARSTATE_ALLBARS) {
        if(Length == null) Length = 55;
        if(Shift == null) Shift = 0;
        if(Deviation == null) Deviation = 1;
        if(sMAType == null) sMAType = "sma";
        if(sMAPriceSource == null) sMAPriceSource = "close";
	}
	if (bInit == false) {
        xMA = eval(sMAType)(Length, eval(sMAPriceSource)());
        bInit = true;
	}
    nMA7 = xMA.getValue(-Shift);
    if (nMA7 == null) return;
    nMA1 = (1 + Deviation * 0.382 / 100) * nMA7;
    nMA4 = (1 - Deviation * 0.382 / 100) * nMA7;
    nMA2 = (1 + Deviation * 0.618 / 100) * nMA7;
    nMA5 = (1 - Deviation * 0.618 / 100) * nMA7;
    nMA3 = (1 + Deviation / 100) * nMA7;
    nMA6 = (1 - Deviation / 100) * nMA7;
    return new Array(nMA1, nMA2, nMA3, nMA4, nMA5, nMA6, nMA7);
}