Ma_angleTest
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Overview
The MA_Angle script is a technical analysis tool designed to measure the "slope" or steepness of Moving Averages (MA). In trading, understanding whether a trend is moving aggressively, slowly, or staying flat is crucial. This indicator translates the price movement of a Moving Average into a degree-based angle, allowing traders to visualize the momentum and strength of a market trend more clearly than they might by looking at a standard line alone.
How It Works
The logic follows a structured process to turn raw price data into a visual histogram:
1. Selecting the Foundation The script begins by allowing you to choose your preferred Moving Average type (such as Simple, Exponential, Smoothed, Linear Weighted, or Least Squares) and the specific price source (like the closing price, opening price, or a median of high/low prices). This ensures the indicator aligns with your existing trading strategy.
2. Calculating the Slope To determine an angle, the script looks at two different points in time on the Moving Average:
- A Current Point (the observation point).
- A Previous Point (a specific distance back in history).
By comparing the value of the Moving Average at these two points, the script calculates the rate of change. It then converts this numerical difference into a geometric angle.
3. Dynamic Scaling Because different currency pairs have different price values (for example, some trade in hundreds while others trade in decimals), the script includes an automatic adjustment factor. This ensures that the angles remain visually consistent and meaningful regardless of which asset you are trading.
4. Visual Categorization (The Histogram) Instead of just showing a line, the script visualizes the results in a separate window using a color-coded histogram:
- Green: Indicates a strong upward angle that exceeds your defined threshold, signifying bullish momentum.
- Red: Indicates a strong downward angle that falls below your negative threshold, signifying bearish momentum.
- Yellow: Represents "Near Zero" territory. If the angle is too small to meet your threshold (meaning the market is moving sideways or consolidating), it appears in yellow.
Summary for Traders
This tool acts as a momentum filter. It helps you identify when a trend is gaining significant strength (Green/Red) and, more importantly, warns you when the market is becoming "flat" or directionless (Yellow), which often precedes a period of consolidation or a potential trend reversal.
//+------------------------------------------------------------------+
//| MA_Angle.mq4 |
//| Modified from code for EMA_Angle by jpkfox |
//| |
//| You can use this indicator to measure when the MA angle is |
//| "near zero". AngleTreshold determines when the angle for the |
//| MA is "about zero": This is when the value is between |
//| [-AngleTreshold, AngleTreshold] (or when the histogram is red). |
//| MAPeriod: MA period |
//| AngleTreshold: The angle value is "about zero" when it is |
//| between the values [-AngleTreshold, AngleTreshold]. |
//| StartMAShift: The starting point to calculate the |
//| angle. This is a shift value to the left from the |
//| observation point. Should be StartMAShift > EndMAShift. |
//| EndMAShift: The ending point to calculate the |
//| angle. This is a shift value to the left from the |
//| observation point. Should be StartMAShift > EndMAShift. |
//| |
//| Modified by MrPip |
//| Red for down |
//| Yellow for near zero |
//| Green for up |
//| 10/15/05 MrPip |
//| Corrected problem with USDJPY and optimized code |
//| 10/23/05 Added other JPY crosses |
//| |
//| 8/1/2006 Modified to use any MA including LSMA | |
//| |
//| 05/05/08 Added SMAPeriod2 for use with iMAOnArray for |
//| moving average of histogram |
//+------------------------------------------------------------------+
#property copyright "MrPip and jpkfox"
//---- 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 MAPeriod=50;
extern string m = "--Moving Average Types--";
extern string m0 = " 0 = SMA";
extern string m1 = " 1 = EMA";
extern string m2 = " 2 = SMMA";
extern string m3 = " 3 = LWMA";
extern string m4 = " 4 = LSMA";
extern int MA_Type = 0;
extern string p = "--Applied Price Types--";
extern string p0 = " 0 = close";
extern string p1 = " 1 = open";
extern string p2 = " 2 = high";
extern string p3 = " 3 = low";
extern string p4 = " 4 = median(high+low)/2";
extern string p5 = " 5 = typical(high+low+close)/3";
extern string p6 = " 6 = weighted(high+low+close+close)/4";
extern int MA_AppliedPrice = 4;
extern double AngleTreshold=25;
extern int PrevMAShift=2;
extern int CurMAShift=0;
int MA_Mode;
string strMAType;
//---- indicator buffers
double UpBuffer[];
double DownBuffer[];
double ZeroBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 1 additional buffers are used for counting.
// IndicatorBuffers(5);
//---- 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!");
switch (MA_Type)
{
case 1: strMAType="EMA"; MA_Mode=MODE_EMA; break;
case 2: strMAType="SMMA"; MA_Mode=MODE_SMMA; break;
case 3: strMAType="LWMA"; MA_Mode=MODE_LWMA; break;
case 4: strMAType="LSMA"; break;
default: strMAType="SMA"; MA_Mode=MODE_SMA; break;
}
//---- name for DataWindow and indicator subwindow label
IndicatorShortName(strMAType+"_Angle("+MAPeriod+","+AngleTreshold+","+PrevMAShift+","+CurMAShift+")");
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| LSMA with PriceMode |
//| PrMode 0=close, 1=open, 2=high, 3=low, 4=median(high+low)/2, |
//| 5=typical(high+low+close)/3, 6=weighted(high+low+close+close)/4 |
//+------------------------------------------------------------------+
double LSMA(int LSMAPeriod, int LSMAPrice,int shift)
{
double wt;
double ma1=iMA(NULL,0,LSMAPeriod,0,MODE_SMA ,LSMAPrice,shift);
double ma2=iMA(NULL,0,LSMAPeriod,0,MODE_LWMA,LSMAPrice,shift);
wt = MathFloor((3.0*ma2-2.0*ma1)/Point)*Point;
return(wt);
}
//+------------------------------------------------------------------+
//| The angle for MA |
//+------------------------------------------------------------------+
int start()
{
double fCurMA, fPrevMA;
double fAngle, mFactor, dFactor;
int nLimit, i;
int nCountedBars;
double angle;
int ShiftDif;
string Sym;
if (MA_Type > 4) MA_Mode = 0;
if(CurMAShift >= PrevMAShift)
{
Print("Error: CurMAShift >= PrevMAShift");
PrevMAShift = 6;
CurMAShift = 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 = 2*3.14159/180.0;
mFactor = 1000.0;
Sym = StringSubstr(Symbol(),3,3);
if (Sym == "JPY") mFactor = 10.0;
ShiftDif = PrevMAShift-CurMAShift;
mFactor /= ShiftDif;
//---- main loop
for(i=0; i<nLimit; i++)
{
if (MA_Type == 4)
{
fCurMA=LSMA(MAPeriod,MA_AppliedPrice, i+CurMAShift);
fPrevMA=LSMA(MAPeriod,MA_AppliedPrice, i+PrevMAShift);
}
else
{
fCurMA=iMA(NULL,0,MAPeriod,0,MA_Mode,MA_AppliedPrice,i+CurMAShift);
fPrevMA=iMA(NULL,0,MAPeriod,0,MA_Mode,MA_AppliedPrice,i+PrevMAShift);
}
// 10000.0 : Multiply by 10000 so that the fAngle is not too small
// for the indicator Window.
// fAngle = mFactor * (fCurMA - fPrevMA)/2.0;
fAngle = (fCurMA - fPrevMA)/ShiftDif;
fAngle = mFactor * 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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