EmaAngleZero_modema
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This tool is designed to help traders visualize the momentum and direction of a moving average by measuring its "angle" or steepness. Rather than just showing you where a price average sits, this script identifies how aggressively that average is moving upward, downward, or whether it is currently flattening out.
How the Logic Works
The script functions by comparing two different points on an Exponential Moving Average (EMA) simultaneously to determine its trajectory:
- Directional Measurement: The logic looks back at a specific starting point and compares it to a closer ending point. By calculating the difference between these two values, the script can determine if the average is climbing, falling, or staying level.
- Sensitivity Scaling: Because price movements can be very small, the tool applies a mathematical multiplier to the data. This ensures that even subtle shifts in the market are scaled appropriately so they are visible and readable on your trading chart.
- The "Zero" Threshold: One of the primary purposes of this script is to identify periods of consolidation. You can set a specific threshold (the "Angle Threshold"). If the movement of the EMA stays within this small range, the tool considers the angle to be "near zero."
Visual Feedback
The indicator displays these results in a separate window as a histogram, using a color-coding system to provide instant visual cues:
- Green: Indicates a clear upward trend where the EMA angle is positive and exceeds your set threshold.
- Red: Indicates a clear downward trend where the EMA angle is negative and falls below your set threshold.
- Yellow: Indicates a "neutral" zone. This appears when the EMA is moving so slowly that it falls within your defined "near zero" boundaries, signaling potential market indecision or sideways movement.
By using this tool, traders can quickly distinguish between strong trending markets and periods of low volatility without having to manually interpret the curvature of moving average lines.
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EmaAngleZero_modema
//+------------------------------------------------------------------+
//| 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;
extern int MODE_MA=1;//0 sma; 1 ema; 2 smma; 3 lwma
//---- 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_MA,PRICE_MEDIAN,i+EndEMAShift);
fStartMA=iMA(NULL,0,EMAPeriod,0,MODE_MA,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);
}
//+------------------------------------------------------------------+
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