MFI-Alert





//+------------------------------------------------------------------+
//|                                             Money Flow Index.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"

#property indicator_separate_window
#property indicator_minimum 0
#property indicator_maximum 100
#property indicator_buffers 3
#property indicator_color1 DodgerBlue
#property indicator_color2 LightGray
#property indicator_color3 LightGray
#property indicator_width1 1
#property indicator_width2 1
#property indicator_width3 1
#property indicator_style1 STYLE_SOLID
#property indicator_style2 STYLE_DOT
#property indicator_style3 STYLE_DOT
//---- input parameters
extern int MFIPeriod=12;
extern int ApplyTo=0;
extern bool AlertMode=true;
extern int OverBought=84;
extern int OverSold=16;
//---- buffers
double MFIBuffer[];
double MFIOBBuffer[];
double MFIOSBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string sShortName;
//---- indicator lines
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,MFIBuffer);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,MFIOBBuffer);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(2,MFIOSBuffer);
//---- name for DataWindow and indicator subwindow label
   sShortName="MFI-Alert("+MFIPeriod+")";
   IndicatorShortName(sShortName);
   SetIndexLabel(0,sShortName);
   SetIndexLabel(1,"OverBought");
   SetIndexLabel(2,"OverSold");
//---- first values aren't drawn
   SetIndexDrawBegin(0,MFIPeriod);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Money Flow Index                                                 |
//+------------------------------------------------------------------+
int start()
  {
   int    i,j,nCountedBars;
   double dPositiveMF,dNegativeMF,dCurrentTP,dPreviousTP;
//---- insufficient data
   if(Bars<=MFIPeriod) return(0);
//---- bars count that does not changed after last indicator launch.
   nCountedBars=IndicatorCounted();
//----
   i=Bars-MFIPeriod-1;
   if(nCountedBars>MFIPeriod) 
      i=Bars-nCountedBars-1;
   while(i>=0)
     {
      dPositiveMF=0.0;
      dNegativeMF=0.0;
      dCurrentTP=(High[i]+Low[i]+Close[i])/3;
      for(j=0; j<MFIPeriod; j++)
        {
         dPreviousTP=(High[i+j+1]+Low[i+j+1]+Close[i+j+1])/3;
         if(dCurrentTP>dPreviousTP)
            dPositiveMF+=Volume[i+j]*dCurrentTP;
         else
           {
            if(dCurrentTP<dPreviousTP)
                dNegativeMF+=Volume[i+j]*dCurrentTP;
           }
          dCurrentTP=dPreviousTP;      
        }
      //----
      if(dNegativeMF!=0.0)      
         MFIBuffer[i]=100-100/(1+dPositiveMF/dNegativeMF);
      else
         MFIBuffer[i]=100;
      //----
      i--;
     }
   if(AlertMode)
   {
      if(MFIBuffer[1]<OverBought && MFIBuffer[0]>=OverBought)
         Alert("MFI "+MFIPeriod+ ", Sell @ Level "+OverBought+" - "+Symbol()+" M"+Period()+" @ "+DoubleToStr(Bid,Digits)+"");
      else if(MFIBuffer[1]>OverSold && MFIBuffer[0]<=OverSold)
         Alert("MFI "+MFIPeriod+ ", Buy @ Level "+OverSold+" - "+Symbol()+" M"+Period()+" @ "+DoubleToStr(Bid,Digits)+"");
   }
//----
   return(0);
  }
//+------------------------------------------------------------------+



Sample





Analysis



Market Information Used:

Series array that contains close prices for each bar
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Series array that contains tick volumes of each bar


Indicator Curves created:

Implements a curve of type DRAW_LINE


Indicators Used:



Custom Indicators Used:

Order Management characteristics:

Other Features:

It issuies visual alerts to the screen