3 MA Cross w_Alert_v1

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Author: Copyright � 2005, Jason Robinson (jnrtrading)
3 MA Cross w_Alert_v1

This tool is designed as a visual and auditory trading assistant that identifies specific momentum shifts in the financial markets. It simplifies complex price movements by monitoring three different Moving Averages (MA) simultaneously to pinpoint potential entry opportunities.

Core Logic and Functionality

The script works by analyzing the relationship between three distinct types of Moving Averages, which you can customize based on your trading style:

  • Fast MA: Reacts quickly to recent price changes.
  • Medium MA: Provides a balanced view of the current trend.
  • Slow MA: Represents the long-term market direction.

Rather than simply looking for one line to cross another, this indicator requires a "confluence" of signals. It looks for specific moments where both the Faster and Medium averages align in their position relative to the Slowest average.

How it Identifies Signals

The logic is divided into two primary types of alerts:

1. Upside Momentum (Buy Signal) The script identifies an "Up Cross" when it detects that the trend is shifting upwards. For a signal to trigger, it verifies that:

  • The Fast Moving Average has moved above the Slow Moving Average.
  • The Medium Moving Average is also positioned above the Slow Moving Average.
  • The movement occurs across a specific timeframe, ensuring the cross is confirmed by the most recent price action.

2. Downside Momentum (Sell Signal) Conversely, it identifies a "Down Cross" when the trend shifts downwards. A signal triggers only when:

  • The Fast Moving Average has dropped below the Slow Moving Average.
  • The Medium Moving Average is also positioned below the Slow Moving Average.
  • Like the upside signal, this must be confirmed by consistent movement in the most recent price bars.

Visual and Audible Notifications

To ensure you don't miss these moments, the script provides three layers of feedback:

  • Visual Markers: It places specific symbols (arrows) directly on your chart at the exact moment the criteria are met. These markers are dynamically placed above or below the price candles based on the current market range to ensure they remain visible.
  • Real-Time Alerts: When a signal occurs, the script generates an audible alert and a pop-up notification.
  • Time Stamping: The alerts include the specific time (hour and minute) of the crossover, allowing you to track exactly when the trend shift was detected.

Summary for the User

Essentially, this tool acts as a filter. It ignores minor price "noise" and only alerts you when multiple moving averages agree that a significant trend change is happening. By requiring both the Fast and Medium averages to align with the Slow average, it helps traders identify more reliable momentum shifts than they might find by looking at a single indicator alone.

Indicators Used
Moving average indicator
Miscellaneous
Implements a curve of type %1It issuies visual alerts to the screen
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3 MA Cross w_Alert_v1 
/*-----------------------------+
|			       |
| Shared by www.Aptrafx.com    |
|			       |
+------------------------------*/

//+--------------------------------------------------------------------------+
//| 3 MA Cross w_Alert.mq4                                                   |
//| Copyright © 2005, Jason Robinson (jnrtrading)                            |
//| http://www.jnrtading.co.uk                                               |
//| 3 ma conversion and Alert , David Honeywell , transport.david@gmail.com  |
//| http://finance.groups.yahoo.com/group/MetaTrader_Experts_and_Indicators/ |
//+--------------------------------------------------------------------------+

/*
  +-------------------------------------------------------------------------------+
  | Allows you to enter 3 ma periods and it will then show you and alert you at   |
  | which point the 2 faster ma's "OPEN" are both above or below the Slowest ma . |
  +-------------------------------------------------------------------------------+
*/   

#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)"
#property link      "http://www.jnrtrading.co.uk"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Aqua
#property indicator_color2 Coral

double CrossUp[];
double CrossDown[];
double prevtime;
double fasterMAnow, slowerMAnow, fasterMAprevious, slowerMAprevious, fasterMAafter, slowerMAafter;
double Range, AvgRange, mediumMAnow, mediumMAprevious, mediumMAafter;
extern int FasterMode =    1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int FasterMA   =    5;
extern int MediumMode =    1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int MediumMA   =   20;
extern int SlowerMode =    1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int SlowerMA   =   34;

extern int SoundAlert =    1; // 0 = disabled

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY);
   SetIndexArrow(1, 234);
   SetIndexBuffer(1, CrossDown);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
 {
   
   int limit, i, counter;
   
   int counted_bars=IndicatorCounted();
   //---- check for possible errors
   if(counted_bars<0) return(-1);
   //---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   
   limit=Bars-counted_bars;
   
   for(i = 0; i <= limit; i++)
    {
      
      counter=i;
      Range=0;
      AvgRange=0;
      for (counter=i ;counter<=i+9;counter++)
       {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
       }
      Range=AvgRange/10;
       
      fasterMAnow      = iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i+1);
      fasterMAprevious = iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i+2);
      fasterMAafter    = iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i);
      
      mediumMAnow      = iMA(NULL, 0, MediumMA, 0, MediumMode, PRICE_CLOSE, i+1);
      mediumMAprevious = iMA(NULL, 0, MediumMA, 0, MediumMode, PRICE_CLOSE, i+2);
      mediumMAafter    = iMA(NULL, 0, MediumMA, 0, MediumMode, PRICE_CLOSE, i);
      
      slowerMAnow      = iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_CLOSE, i+1);
      slowerMAprevious = iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_CLOSE, i+2);
      slowerMAafter    = iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_CLOSE, i);
      
      if ((fasterMAnow     > slowerMAnow       &&
          fasterMAprevious <= slowerMAprevious  &&
          fasterMAafter    > slowerMAafter     &&
          mediumMAnow      > slowerMAnow     )
          ||
          (fasterMAnow     > slowerMAnow       &&
          mediumMAnow      > slowerMAnow       &&
          mediumMAprevious <= slowerMAprevious  &&
          mediumMAafter    > slowerMAafter   ))
       {
         CrossUp[i] = Low[i] - Range*0.5;
       }
       
      if ((fasterMAnow     < slowerMAnow       &&
          fasterMAprevious >= slowerMAprevious  &&
          fasterMAafter    < slowerMAafter     &&
          mediumMAnow      < slowerMAnow     )
          ||
          (fasterMAnow     < slowerMAnow       &&
          mediumMAnow      < slowerMAnow       &&
          mediumMAprevious >= slowerMAprevious  &&
          mediumMAafter    < slowerMAafter   ))
       {
         CrossDown[i] = High[i] + Range*0.5;
       }
      
    }
   
      if ((CrossUp[0] > 2000) && (CrossDown[0] > 2000)) { prevtime = 0; }
      
      if ((CrossUp[0] == Low[0] - Range*0.5) && (prevtime != Time[0]) && (SoundAlert != 0))
       {
         prevtime = Time[0];
         Alert(Symbol()," 3 MA Cross Up @  Hour ",Hour(),"  Minute ",Minute());
       }
      
      if ((CrossDown[0] == High[0] + Range*0.5) && (prevtime != Time[0]) && (SoundAlert != 0))
       {
         prevtime = Time[0];
         Alert(Symbol()," 3 MA Cross Down @  Hour ",Hour(),"  Minute ",Minute());
       }
   
   //Comment("  CrossUp[0]  ",CrossUp[0]," ,  CrossDown[0]  ",CrossDown[0]," ,  prevtime  ",prevtime);
   //Comment("");
   
   return(0);
 }

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