Stochastic_KDcross_openBarSigAlert

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Author: Copyright � 2005-07, Jason Robinson (jnrtrading)
Stochastic_KDcross_openBarSigAlert

This script is designed as a visual trading aid for the MetaTrader platform, specifically tailored to identify and highlight "cross-over" moments in the Stochastic Oscillator. It simplifies market analysis by automatically detecting when two key momentum lines intersect and providing immediate notifications to the trader.

Core Logic and Functionality

Momentum Analysis The tool monitors the relationship between two lines of the Stochastic Oscillator (the %K and %D lines). These lines represent price momentum; when they move in relation to one another, it can indicate a shift in market trend or a potential entry point for a trade.

Signal Detection The script continuously scans every price bar to identify two specific types of events:

  • Bullish Cross (Upward): When the primary momentum line moves from below to above the secondary line.
  • Bearish Cross (Downward): When the primary momentum line moves from above to below the secondary line.

Visual Representation To ensure these signals are easy to see even on crowded charts, the script places distinct visual markers (arrows) at the exact moment a crossover occurs:

  • Buy Signals: An upward-pointing arrow appears below the price candle.
  • Sell Signals: A downward-pointing arrow appears above the price candle.

The script dynamically calculates the distance of these arrows based on recent market volatility (the range of highs and lows), ensuring that the markers are always placed at a visible distance from the price action without overlapping with the candles.

Automated Notifications Beyond visual cues, the script includes a communication system to keep traders informed in real-time:

  • Screen Alerts: If enabled, the software will trigger an audible and pop-up alert on the trading platform the moment a crossover is detected on a new bar of price movement.
  • Email Notifications: The script can be configured to send a direct email alert containing the specific signal type (Buy or Sell), the current Ask/Bid prices, and the exact date and time of the occurrence.

Customization Options The tool is highly configurable, allowing users to define:

  • The specific periods and methods used to calculate the Stochastic Oscillator.
  • The visual style of the arrows (size, shape, and thickness) to suit different chart aesthetics.
  • The toggle switches for turning on or off specific alert types (Screen vs. Email).
Price Data Components
Series array that contains open time of each bar
Indicators Used
Stochastic oscillator
Miscellaneous
Implements a curve of type %1It issuies visual alerts to the screenIt sends emails
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Stochastic_KDcross_openBarSigAlert 
//+------------------------------------------------------------------+
//|                Stoch Crossing.mq4 modified from                  |
//+------------------------------------------------------------------+
//|                                         EMA-Crossover_Signal.mq4 |
//|         Copyright © 2005-07, Jason Robinson (jnrtrading)         |
//|                   http://www.jnrtading.co.uk                     |
//+------------------------------------------------------------------+

/*
  +------------------------------------------------------------------+
  | Allows you to enter two ema periods and it will then show you at |
  | Which point they crossed over. It is more usful on the shorter   |
  | periods that get obscured by the bars / candlesticks and when    |
  | the zoom level is out. Also allows you then to remove the emas   |
  | from the chart. (emas are initially set at 5 and 6)              |
  +------------------------------------------------------------------+
*/   
//2008fxtsd mod Stochastic_KDcross_openBarSigAlert  ki 
#property copyright "Copyright © 2005-07, Jason Robinson (jnrtrading)"
#property link      "http://www.jnrtrading.co.uk/"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 DarkGreen
#property indicator_width1 3
#property indicator_color2 Red
#property indicator_width2 3

extern string note1 = "Stochastic settings";
extern string note2 = "default = Stoch(30,10,10)";
extern int       KPeriod1     =  5;//30
extern int       DPeriod1     =  3;//10
extern int       Slowing1     =  3;//10
extern string note3 = "0=sma, 1=ema, 2=smma, 3=lwma";
extern int       MAMethod1    =   0;
extern string note4 = "0=high/low, 1=close/close";
extern int       PriceField1  =   1;

extern string note5 = "--------------------------------------------";
extern string note6 = "Arrow Type";
extern string note7 = "0=Thick, 1=Thin, 2=Hollow, 3=Round";
extern string note8 = "4=Fractal, 5=Diagonal Thin";
extern string note9 = "6=Diagonal Thick, 7=Diagonal Hollow";
extern string note10 = "8=Thumb, 9=Finger";
extern int ArrowType=3;
extern string note11 = "--------------------------------------------";
extern string note12 = "turn on Alert = true; turn off = false";
extern bool AlertOn = true;
extern string note13 = "--------------------------------------------";
extern string note14 = "send Email Alert = true; turn off = false";
extern bool SendAnEmail=false;
extern string note15 = "---------------------------------- Try";
extern string note16 = "GBPJPY M15 chart Stoch(30,10,10)";

double CrossUp[];
double CrossDown[];

string AlertPrefix;
string GetTimeFrameStr() {
   switch(Period())
   {
      case 1 : string TimeFrameStr="M1"; break;
      case 5 : TimeFrameStr="M5"; break;
      case 15 : TimeFrameStr="M15"; break;
      case 30 : TimeFrameStr="M30"; break;
      case 60 : TimeFrameStr="H1"; break;
      case 240 : TimeFrameStr="H4"; break;
      case 1440 : TimeFrameStr="D1"; break;
      case 10080 : TimeFrameStr="W1"; break;
      case 43200 : TimeFrameStr="MN1"; break;
      default : TimeFrameStr=Period();
   } 
   return (TimeFrameStr);
   }

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   if (ArrowType == 0) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 233);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 234);
   }
   else if (ArrowType == 1) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 225);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 226);
   }
   else if (ArrowType == 2) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 241);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 242);
   }
   else if (ArrowType == 3) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 221);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 222);
   }
   else if (ArrowType == 4) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 217);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 218);
   }
   else if (ArrowType == 5) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 228);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 230);
   }
   else if (ArrowType == 6) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 236);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 238);
   }
   else if (ArrowType == 7) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 246);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 248);
   }
   else if (ArrowType == 8) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 67);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 68);
   }
   else if (ArrowType == 9) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 71);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 72);
   }

   SetIndexBuffer(0, CrossUp);
   SetIndexBuffer(1, CrossDown);

SetIndexEmptyValue(0,EMPTY_VALUE);
SetIndexEmptyValue(1,EMPTY_VALUE);
   
   
   AlertPrefix=Symbol()+" ("+GetTimeFrameStr()+"):  ";
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
bool NewBar()
{
   static datetime lastbar;
   datetime curbar = Time[0];
   if(lastbar!=curbar)
   {
      lastbar=curbar;
      return (true);
   }
   else
   {
      return(false);
   }
}   
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int limit, i, counter;
   double stochastic1now, stochastic2now, stochastic1previous, stochastic2previous, stochastic1after, stochastic2after;
   double Range, AvgRange;
   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;      
      
      stochastic1now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i);
      stochastic1previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i+1);
    //  stochastic1after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i-1);
      stochastic2now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i);
      stochastic2previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i+1);
    //  stochastic2after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i-1);
            
      if ((stochastic1now > stochastic2now) && (stochastic1previous < stochastic2previous) ) 
      {
//      if ((stochastic1now > stochastic2now) && (stochastic1previous < stochastic2previous) && (stochastic1after > stochastic2after)) {
                   CrossUp[i] = Low[i] - Range*1.5;
                   if (AlertOn && NewBar()) {
                      Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses UP %D\nBUY signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                   }   
              	    if (SendAnEmail && NewBar()) {
                      SendMail(AlertPrefix,"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses UP %D\nBUY signal @ Ask = "+DoubleToStr(Ask,4)+", Bid = "+DoubleToStr(Bid,4)+", Date & Time = "+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime()));
              	    }
      }
      else if ((stochastic1now < stochastic2now) && (stochastic1previous > stochastic2previous) ) 
      {
                 CrossDown[i] = High[i] + Range*1.5;
                   if (AlertOn && NewBar()){
                      Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses DOWN %D\nSELL signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                   }
              	    if (SendAnEmail && NewBar()) {
                      SendMail(AlertPrefix,"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses DOWN %D\nSELL signal @ Ask = "+DoubleToStr(Ask,4)+", Bid = "+DoubleToStr(Bid,4)+", Date & Time = "+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime()));
              	    }
      }
      else 
      {
      CrossUp[i] = EMPTY_VALUE;
      CrossDown[i] = EMPTY_VALUE;
      }

   }
   return(0);
}

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