Pullback.efs, Arrows.efs, MAC.efs
File Name: Pullback.efs, Arrows.efs, MAC.efs
Description:
These studies are based on the March 2009 article, Second Chance Options , by Barbara Star PhD.
Formula Parameters:
Pullback Indicators
- Down Color : Green
- Up Color : Red
- Length Time Series MA : 5
- Length EMA1 : 8
- Length EMA2 : 20
- Type MA for MA1 : EMA
- Type MA for MA2 : EMA
- Price For Time Series MA : Close
- Price For EMA1 : Close
- Price For EMA2 : Close
Arrows Indicator
- Up arrow color : green
- Down arrow color : red
MAC indicator
- Use exponential moving average : true
- Moving average source : close
- Fast MA length : 8
- Slow MA length : 20
- Percent levels - absolute value : 0.5
- Above zero line color : green
- Below zero line color : red
- Zero line color : black
Notes:
The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.
Download File:
Pullback.efs
Arrows.efs
MAC.efs
EFS Code:
Pullback.efs
/*********************************
Provided By:
eSignal (Copyright c eSignal), a division of Interactive Data
Corporation. 2008. 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:
Pullback Indicators
Version: 1.0 03/01/2009
Formula Parameters: Default:
Down Color Green
Up Color Red
Length Time Series MA 5
Length EMA1 8
Length EMA2 20
Type MA for MA1 EMA
Type MA for MA2 EMA
Price For Time Series MA Close
Price For EMA1 Close
Price For EMA2 Close
Notes:
These studies are based on the March 2009 article, Second Chance
Options, by Barbara Star PhD.
**********************************/
var fpArray = new Array();
var bInit = false;
function preMain() {
setPriceStudy(true);
setShowCursorLabel(false);
setShowTitleParameters( false );
setColorPriceBars(true);
setStudyTitle("Pullback Indicators");
setDefaultPriceBarColor(Color.black);
askForInput();
var x=0;
fpArray[x] = new FunctionParameter("LineColor1", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Down Color");
setDefault(Color.green);
}
fpArray[x] = new FunctionParameter("LineColor2", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Up Color");
setDefault(Color.red);
}
fpArray[x] = new FunctionParameter("Length5", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Length Time Series MA");
setLowerLimit(1);
setDefault(5);
}
fpArray[x] = new FunctionParameter("Length8", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Length EMA1");
setLowerLimit(1);
setDefault(8);
}
fpArray[x] = new FunctionParameter("Length20", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Length EMA2");
setLowerLimit(1);
setDefault(20);
}
fpArray[x] = new FunctionParameter("Line8", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Type MA for MA1");
addOption("sma");
addOption("ema");
addOption("wma");
addOption("vwma");
setDefault("ema");
}
fpArray[x] = new FunctionParameter("Line20", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Type MA for MA2");
addOption("sma");
addOption("ema");
addOption("wma");
addOption("vwma");
setDefault("ema");
}
fpArray[x] = new FunctionParameter("PriceLine5", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Price For Time Series MA");
addOption("open");
addOption("high");
addOption("low");
addOption("close");
addOption("hl2");
addOption("hlc3");
addOption("ohlc4");
setDefault("close");
}
fpArray[x] = new FunctionParameter("PriceLine8", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Price For EMA1");
addOption("open");
addOption("high");
addOption("low");
addOption("close");
addOption("hl2");
addOption("hlc3");
addOption("ohlc4");
setDefault("close");
}
fpArray[x] = new FunctionParameter("PriceLine20", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Price For EMA2");
addOption("open");
addOption("high");
addOption("low");
addOption("close");
addOption("hl2");
addOption("hlc3");
addOption("ohlc4");
setDefault("close");
}
}
var xMOV5 = null;
var xMOV8 = null;
var xMOV20 = null;
function main(PriceLine5, PriceLine8, PriceLine20, Line8, Line20, Length5, Length8, Length20, LineColor1, LineColor2) {
var vSymbol;
var nMOV5 = 0;
var nMOV8 = 0;
var nMOV20 = 0;
var nMOV5_Ref = 0;
if ( bInit == false ) {
if(vSymbol == null) vSymbol = getSymbol();
xMOV5 = efsInternal("LinearReg", eval(PriceLine5)(sym(vSymbol)), Length5, 1);
xMOV8 = eval(Line8)(Length8, eval(PriceLine8)(sym(vSymbol)));
xMOV20 = eval(Line20)(Length20, eval(PriceLine20)(sym(vSymbol)));
bInit = true;
}
nMOV5 = xMOV5.getValue(0);
nMOV5_Ref = xMOV5.getValue(-1);
nMOV8 = xMOV8.getValue(0);
nMOV20 = xMOV20.getValue(-1);
if (nMOV5_Ref == null || nMOV20 == null) return;
if (nMOV8 > nMOV20 && nMOV5 <= nMOV5_Ref) {
setPriceBarColor(LineColor1);
}
if (nMOV8 < nMOV20 && nMOV5 >= nMOV5_Ref) {
setPriceBarColor(LineColor2);
}
return;
}
function LinearReg(xSeries, Length, TgtBar){
var nRes = 0;
var nSumXY = 0;
var nSumY = 0;
var nSumX = 0;
var nSumXSqr = 0;
var nOneSixth = 1 / 6;
var nDivisor = 0;
var nLRSlope = 0;
var nLRAngle = 0;
var nLRIntercept = 0;
var nLRValue = 0;
var pi = 3.1415926;
var ExecOffset = 0;
if (Length > 1) {
nSumX = Length * (Length - 1) * 0.5;
nSumXSqr = Length * (Length - 1) * (2 * Length - 1) * nOneSixth ;
nDivisor = Math.pow(nSumX, 2) - Length * nSumXSqr ;
nSumXY = 0;
for (var nValue1 = 0; nValue1 < Length; nValue1++) {
nSumXY += nValue1 * xSeries.getValue(-nValue1);
}
nSumY = Summation(xSeries, Length);
nLRSlope = (Length * nSumXY - nSumX * nSumY) / nDivisor ;
nLRAngle = Math.atan(nLRSlope) * 180 / pi;
nLRIntercept = (nSumY - nLRSlope * nSumX) / Length ;
nLRValue = nLRIntercept + nLRSlope * (Length - 1 + ExecOffset - TgtBar) ;
nRes = nLRValue;
}
if (nRes == null) nRes = 1;
return nRes;
}
function Summation(xSeries, nLength){
var nRes = 0;
for (var i = 0; i < nLength; i++) {
nRes += xSeries.getValue(-i);
}
if (nRes == null) nRes = 1;
return nRes;
}
Arrows.efs
/*********************************
Provided By:
eSignal (Copyright c eSignal), a division of Interactive Data
Corporation. 2008. 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:
Arrows Indicator.
Version: 1.0 03/01/2009
Formula Parameters: Default:
Up arrow color green
Down arrow color red
Notes:
Up arrow when 8 ema crosses above the 20 ema.
Down arrow when 8 ema crosses below the 20 ema.
These studies are based on the March 2009 article, Second Chance
Options , by Barbara Star PhD.
**********************************/
var fpArray = new Array();
var bInit = false;
function preMain() {
setPriceStudy(true);
setStudyTitle("MA arrows");
setCursorLabelName("8MA", 0);
setCursorLabelName("20MA", 1);
setDefaultBarFgColor(Color.green, 0);
setDefaultBarFgColor(Color.blue, 1);
var x = 0;
fpArray[x] = new FunctionParameter("UpColor", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Up arrow color");
setDefault(Color.green);
}
fpArray[x] = new FunctionParameter("DownColor", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Down arrow color");
setDefault(Color.red);
}
}
var x8ma = null;
var x20ma = null;
function main(UpColor, DownColor) {
var nBarCount = getCurrentBarCount();
if (UpColor == null) UpColor = Color.green;
if (DownColor == null) DownColor = Color.red;
if (bInit == false) {
x8ma = ema(8);
x20ma = ema(20);
bInit = true;
}
if (x8ma.getValue(-1) < x20ma.getValue(-1) && x8ma.getValue(0) > x20ma.getValue(0)) {
drawShapeRelative(0, BelowBar2, Shape.UPARROW, null, UpColor, Shape.PRESET, "UpArrow"+nBarCount);
} else{
removeShape("UpArrow"+nBarCount);
}
if (x8ma.getValue(-1) > x20ma.getValue(-1) && x8ma.getValue(0) < x20ma.getValue(0)) {
drawShapeRelative(0, AboveBar2, Shape.DOWNARROW, null, DownColor, Shape.PRESET, "DnArrow"+nBarCount);
} else {
removeShape("DnArrow"+nBarCount);
}
return new Array(x8ma.getValue(0), x20ma.getValue(0));
}
MAC.efs
/*********************************
Provided By:
eSignal (Copyright c eSignal), a division of Interactive Data
Corporation. 2008. 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:
MAC indicator.
Version: 1.0 03/01/2009
Formula Parameters: Default:
Use exponential moving average true
Moving average source close
Fast MA length 8
Slow MA length 20
Percent levels - absolute value 0.5
Above zero line color green
Below zero line color red
Zero line color black
Notes:
Price oscillator with 8 and 20 exponential moving averages is either
above (green) or below (red) its 0.5 percent levels.
If(OscP(8,20,e,% )>0.5,1,0) vertical lines are green above the zero line
If(OscP(8,20,e,% )<-0.5,-1,0) vertical lines are red below the zero line
Dots are plotted in black along the zero line when the indicator value is
between the +0.5 and -0.5 levels.
The values described above are defaults and can be changed.
These studies are based on the March 2009 article, Second Chance
Options, by Barbara Star PhD.
**********************************/
var fpArray = new Array();
var bInit = false;
function preMain() {
setPriceStudy(false);
setShowCursorLabel(true);
setShowTitleParameters( false );
setPlotType(PLOTTYPE_HISTOGRAM);
setDefaultBarThickness(1);
setStudyTitle("MAC");
setStudyMax(1);
setStudyMin(-1);
askForInput();
var x=0;
fpArray[x] = new FunctionParameter("UseExp", FunctionParameter.BOOLEAN);
with(fpArray[x++]){
setName("Use exponential moving average");
setDefault("true");
}
fpArray[x] = new FunctionParameter("MASource", FunctionParameter.STRING);
with(fpArray[x++]){
setName("Moving average source");
addOption("open");
addOption("high");
addOption("low");
addOption("close");
addOption("hl2");
addOption("hlc3");
addOption("ohlc4");
setDefault("close");
}
fpArray[x] = new FunctionParameter("LFast_MA", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Fast MA Length");
setLowerLimit(1);
setDefault(8);
}
fpArray[x] = new FunctionParameter("LSlow_MA", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Slow MA Length");
setLowerLimit(1);
setDefault(20);
}
fpArray[x] = new FunctionParameter("Levels", FunctionParameter.NUMBER);
with(fpArray[x++]){
setName("Percent Levels");
setLowerLimit(0.01);
setDefault(0.5);
}
fpArray[x] = new FunctionParameter("AboveColor", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Above Zero Line color");
setDefault(Color.green);
}
fpArray[x] = new FunctionParameter("BelowColor", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Below Zero Line color");
setDefault(Color.red);
}
fpArray[x] = new FunctionParameter("ZeroColor", FunctionParameter.COLOR);
with(fpArray[x++]){
setName("Zero Line color");
setDefault(Color.black);
}
}
var xOsc = null;
function main(UseExp, MASource, LFast_MA, LSlow_MA, Levels, AboveColor, BelowColor, ZeroColor) {
if (UseExp == null) UseExp = true;
if (MASource == null) MASource = "close";
if (LFast_MA == null) LFast_MA = 8;
if (LSlow_MA == null) LSlow_MA = 20;
if (Levels == null) Levels = 0.5;
if (AboveColor == null) AboveColor = Color.green;
if (BelowColor == null) BelowColor = Color.red;
if (ZeroColor == null) ZeroColor = Color.black;
if ( bInit == false ) {
xOsc = osc(LFast_MA, LSlow_MA, UseExp, eval(MASource)());
bInit = true;
}
var nYvalue = 0;
var drawColor = ZeroColor;
var nOsc = xOsc.getValue(0);
if (nOsc > Levels) {
nYvalue = 1;
drawColor = AboveColor;
} else if (nOsc < -Levels) {
nYvalue = -1;
drawColor = BelowColor;
}
setBarFgColor(drawColor);
return nYvalue;
}