Heiken Ashi_SWAlert
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This script is designed to enhance the standard Heiken Ashi charting method by providing a clear visual trend indicator and an automated notification system. Instead of requiring you to interpret raw price candles manually, it processes price data to determine the underlying market direction in real-time.
Core Logic Overview
1. Price Smoothing and Trend Identification The tool works by calculating specific "Heiken Ashi" values—a type of averaging that smooths out market noise. It compares these smoothed opening and closing prices to determine whether the current market momentum is moving upward or downward. By doing this, it filters out minor price fluctuations to help you see the broader trend more clearly.
2. Visual Representation The script projects its findings into a separate window on your trading platform. It uses a histogram format where:
- A specific color/value represents an Upward Trend.
- A different color/value represents a Downward Trend. This allows you to quickly see at a glance whether the market is currently leaning bullish or bearish without cluttering your main price chart.
3. Automated Alert System One of the primary functions of this script is its ability to "watch" the market for you. It looks for specific "trend flips"—moments where the momentum shifts from negative to positive (a potential Buy signal) or from positive to negative (a potential Sell signal).
When these shifts occur, the script performs three actions:
- Visual Alert: It triggers a pop-up message on your screen identifying the specific asset and timeframe.
- Audio Notification: If enabled in the settings, it plays a sound file to grab your attention immediately.
- Logic Filter: To ensure you aren't bombarded with constant notifications, the script includes "memory" logic; it ensures that an alert only triggers once per trend change, preventing repetitive signals during a single sustained move.
Summary for the User
Essentially, this tool acts as a trend-tracking assistant. It converts complex price movements into a simplified visual trend line and proactively notifies you via sound and pop-up alerts the moment the market sentiment shifts from one direction to another.
//+------------------------------------------------------------------+
//| Heiken Ashi_SWAlert.mq4 |
//| Copyright © 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//| Modififed by Igorad for display in separate window |
//| "http://www.forex-tsd.com/"|
//+------------------------------------------------------------------+
//| For Heiken Ashi we recommend next chart settings ( press F8 or |
//| select on menu 'Charts'->'Properties...'): |
//| - On 'Color' Tab select 'Black' for 'Line Graph' |
//| - On 'Common' Tab disable 'Chart on Foreground' checkbox and |
//| select 'Line Chart' radiobutton |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_width1 3
#property indicator_color2 White
#property indicator_width2 3
#property indicator_maximum 1.05
#property indicator_minimum -0.05
//#property indicator_color3 Red/
//#property indicator_color4 White
//---- buffers
extern int SoundAlertMode = 0;
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
double trend[];
//----
int ExtCountedBars=0;
bool UpTrendAlert=false, DownTrendAlert=false;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//|------------------------------------------------------------------|
int init()
{
//---- indicators
IndicatorBuffers(5);
SetIndexStyle(0,DRAW_HISTOGRAM);
SetIndexBuffer(0, ExtMapBuffer1);
SetIndexStyle(1,DRAW_HISTOGRAM);
SetIndexBuffer(1, ExtMapBuffer2);
// SetIndexStyle(2,DRAW_HISTOGRAM, 0, 3, Red);
SetIndexBuffer(2, ExtMapBuffer3);
// SetIndexStyle(3,DRAW_HISTOGRAM, 0, 3, White);
SetIndexBuffer(3, ExtMapBuffer4);
SetIndexBuffer(4,trend);
//----
SetIndexDrawBegin(0,10);
SetIndexDrawBegin(1,10);
//SetIndexDrawBegin(2,10);
//SetIndexDrawBegin(3,10);
//---- indicator buffers mapping
//SetIndexBuffer(0,ExtMapBuffer1);
//SetIndexBuffer(1,ExtMapBuffer2);
//SetIndexBuffer(2,ExtMapBuffer3);
//SetIndexBuffer(3,ExtMapBuffer4);
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//---- TODO: add your code here
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
double haOpen, haHigh, haLow, haClose;
if(Bars<=10) return(0);
ExtCountedBars=IndicatorCounted();
//---- check for possible errors
if (ExtCountedBars<0) return(-1);
//---- last counted bar will be recounted
if (ExtCountedBars>0) ExtCountedBars--;
int pos=Bars-ExtCountedBars-1;
while(pos>=0)
{
haOpen=(ExtMapBuffer3[pos+1]+ExtMapBuffer4[pos+1])/2;
haClose=(Open[pos]+High[pos]+Low[pos]+Close[pos])/4;
haHigh=MathMax(High[pos], MathMax(haOpen, haClose));
haLow=MathMin(Low[pos], MathMin(haOpen, haClose));
trend[pos]=trend[pos+1];
if (haOpen<haClose)
{
trend[pos]=1;
ExtMapBuffer1[pos]=0;
ExtMapBuffer2[pos]=1;
if (SoundAlertMode>0 && pos==0 && trend[1]<0) PlaySound("alert2.wav");
}
else
{
trend[pos]=-1;
ExtMapBuffer1[pos]=1;
ExtMapBuffer2[pos]=0;
if (SoundAlertMode>0 && pos==0 && trend[1]>0) PlaySound("alert2.wav");
}
ExtMapBuffer3[pos]=haOpen;
ExtMapBuffer4[pos]=haClose;
pos--;
}
//----------
string Message;
if ( trend[2]<0 && trend[1]>0 && Volume[0]>1 && !UpTrendAlert)
{
Message = " "+Symbol()+" M"+Period()+": Signal for BUY";
if ( SoundAlertMode>0 ) Alert (Message);
UpTrendAlert=true; DownTrendAlert=false;
}
if ( trend[2]>0 && trend[1]<0 && Volume[0]>1 && !DownTrendAlert)
{
Message = " "+Symbol()+" M"+Period()+": Signal for SELL";
if ( SoundAlertMode>0 ) Alert (Message);
DownTrendAlert=true; UpTrendAlert=false;
}
//----
return(0);
}
//+------------------------------------------------------------------+
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