//+------------------------------------------------------------------+
//| EMAAngle.mq4 |
//| jpkfox |
//| |
//| You can use this indicator to measure when the EMA angle is |
//| "near zero". AngleTreshold determines when the angle for the |
//| EMA is "about zero": This is when the value is between |
//| [-AngleTreshold, AngleTreshold] (or when the histogram is red). |
//| EMAPeriod: EMA period |
//| AngleTreshold: The angle value is "about zero" when it is |
//| between the values [-AngleTreshold, AngleTreshold]. |
//| StartEMAShift: The starting point to calculate the |
//| angle. This is a shift value to the left from the |
//| observation point. Should be StartEMAShift > EndEMAShift. |
//| StartEMAShift: The ending point to calculate the |
//| angle. This is a shift value to the left from the |
//| observation point. Should be StartEMAShift > EndEMAShift. |
//| |
//| Modified by MrPip |
//| Red for down |
//| Yellow for near zero |
//| Green for up |
//| 10/15/05 MrPip |
//| Corrected problem with USDJPY and optimized code |
//| |
//+------------------------------------------------------------------+
#property copyright "jpkfox"
#property link "http://www.strategybuilderfx.com/forums/showthread.php?t=15274&page=1&pp=8"
//---- indicator settings
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 LimeGreen
#property indicator_color2 Yellow
#property indicator_color3 FireBrick
//---- indicator parameters
extern int EMAPeriod=34;
extern double AngleTreshold=0.2;
extern int StartEMAShift=6;
extern int EndEMAShift=0;
//---- indicator buffers
double UpBuffer[];
double DownBuffer[];
double ZeroBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(3);
//---- drawing settings
SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,2);
SetIndexStyle(1,DRAW_HISTOGRAM,STYLE_SOLID,2);
SetIndexStyle(2,DRAW_HISTOGRAM,STYLE_SOLID,2);
//----
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
if(!SetIndexBuffer(0,UpBuffer) &&
!SetIndexBuffer(1,DownBuffer) &&
!SetIndexBuffer(2,ZeroBuffer))
Print("cannot set indicator buffers!");
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("EMAAngleZero("+EMAPeriod+","+AngleTreshold+","+StartEMAShift+","+EndEMAShift+")");
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| The angle for EMA |
//+------------------------------------------------------------------+
int start()
{
double fEndMA, fStartMA;
double fAngle, mFactor, dFactor;
int nLimit, i;
int nCountedBars;
double angle;
int ShiftDif;
if(EndEMAShift>=StartEMAShift)
{
Print("Error: EndEMAShift >= StartEMAShift");
StartEMAShift=6;
EndEMAShift=0;
}
nCountedBars=IndicatorCounted();
//---- check for possible errors
if(nCountedBars<0)
return(-1);
//---- last counted bar will be recounted
if(nCountedBars>0)
nCountedBars--;
//----
nLimit=Bars-nCountedBars;
//----
dFactor=3.14159/180.0;
mFactor=10000.0;
if (Symbol()=="USDJPY") mFactor=100.0;
ShiftDif=StartEMAShift-EndEMAShift;
mFactor/=ShiftDif;
//---- main loop
for(i=0; i<nLimit; i++)
{
fEndMA=iMA(NULL,0,EMAPeriod,0,MODE_EMA,PRICE_MEDIAN,i+EndEMAShift);
fStartMA=iMA(NULL,0,EMAPeriod,0,MODE_EMA,PRICE_MEDIAN,i+StartEMAShift);
// 10000.0 : Multiply by 10000 so that the fAngle is not too small
// for the indicator Window.
fAngle=mFactor * (fEndMA - fStartMA);
// fAngle = MathArctan(fAngle)/dFactor;
DownBuffer[i]=0.0;
UpBuffer[i]=0.0;
ZeroBuffer[i]=0.0;
//----
if(fAngle > AngleTreshold)
UpBuffer[i]=fAngle;
else if (fAngle < -AngleTreshold)
DownBuffer[i]=fAngle;
else ZeroBuffer[i]=fAngle;
}
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Indicator Curves created:
Implements a curve of type DRAW_HISTOGRAM
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features: