//+------------------------------------------------------------------+
//|                                               MA_AvgOfFour.mq4   |
//|                                    Copyright © 2010, Robert Hill |
//| Written for Pete Hadleybased on post on Yahoo MT E & I           |
//| Takes 4 different moving averages, takes the average             | 
//| and plots the resulting MA from the average                      |    
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2010, Robert Hill"
#property link      "None"

//---- indicator settings

#property  indicator_chart_window
#property  indicator_buffers 5
#property indicator_color1 Yellow      
#property indicator_color2 Orange
#property indicator_color3 Red
#property indicator_color4 Aqua
#property indicator_color5 Blue
#property indicator_width1 2
#property indicator_width2 1
#property indicator_width3 1
#property indicator_width4 1
#property indicator_width5 1

extern bool    DisplayMAs = true;

extern int     MAPeriodHigh1 = 14;
extern int     MAPeriodHigh2 = 25;
extern int     MAPeriodLow1 = 18;
extern int     MAPeriodLow2 = 34;
extern int     MAPeriod=14;
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 int     MATypeHigh1=0;
extern int     MATypeHigh2=0;
extern int     MATypeLow1=0;
extern int     MATypeLow2=0;
extern int     MAType=0;

//---- buffers

double MA_Buffer[];
double MA_High1[];
double MA_High2[];
double MA_Low1[];
double MA_Low2[];
double MA_Avg[];


//---- variables

int    MAModeH1;
int    MAModeH2;
int    MAModeL1;
int    MAModeL2;
int    MAMode;
string strMATypeH1;
string strMATypeH2;
string strMATypeL1;
string strMATypeL2;
string strMAType;


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorBuffers(6);
   
//---- drawing settings
   SetIndexBuffer(0,MA_Buffer);
   SetIndexBuffer(1,MA_High1);
   SetIndexBuffer(2,MA_High2);
   SetIndexBuffer(3,MA_Low1);
   SetIndexBuffer(4,MA_Low2);
   SetIndexBuffer(5, MA_Avg);
   
   SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
   SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,1);
   SetIndexStyle(2,DRAW_LINE,STYLE_SOLID,1);
   SetIndexStyle(3,DRAW_LINE,STYLE_SOLID,1);
   SetIndexStyle(4,DRAW_LINE,STYLE_SOLID,1);

   switch (MATypeHigh1)
   {
      case 1: strMATypeH1="EMA"; MAModeH1=MODE_EMA; break;
      case 2: strMATypeH1="SMMA"; MAModeH1=MODE_SMMA; break;
      case 3: strMATypeH1="LWMA"; MAModeH1=MODE_LWMA; break;
      default: strMATypeH1="SMA"; MAModeH1=MODE_SMA; break;
   }
   switch (MATypeHigh2)
   {
      case 1: strMATypeH2="EMA"; MAModeH2=MODE_EMA; break;
      case 2: strMATypeH2="SMMA"; MAModeH2=MODE_SMMA; break;
      case 3: strMATypeH2="LWMA"; MAModeH2=MODE_LWMA; break;
      default: strMATypeH2="SMA"; MAModeH2=MODE_SMA; break;
   }
   switch (MATypeLow1)
   {
      case 1: strMATypeL1="EMA"; MAModeL1=MODE_EMA; break;
      case 2: strMATypeL1="SMMA"; MAModeL1=MODE_SMMA; break;
      case 3: strMATypeL1="LWMA"; MAModeL1=MODE_LWMA; break;
      default: strMATypeL1="SMA"; MAModeL1=MODE_SMA; break;
   }
   switch (MATypeLow2)
   {
      case 1: strMATypeL2="EMA"; MAModeL2=MODE_EMA; break;
      case 2: strMATypeL2="SMMA"; MAModeL2=MODE_SMMA; break;
      case 3: strMATypeL2="LWMA"; MAModeL2=MODE_LWMA; break;
      default: strMATypeL2="SMA"; MAModeL2=MODE_SMA; break;
   }
   switch (MAType)
   {
      case 1: strMAType="EMA"; MAMode=MODE_EMA; break;
      case 2: strMAType="SMMA"; MAMode=MODE_SMMA; break;
      case 3: strMAType="LWMA"; MAMode=MODE_LWMA; break;
      default: strMAType="SMA"; MAMode=MODE_SMA; break;
   }
   IndicatorShortName( strMAType+ " (" +MAPeriod + ") ");

   SetIndexLabel(0,strMAType+ " (" +MAPeriod + ") ");
   SetIndexLabel(1,strMATypeH1+ " (" +MAPeriodHigh1 + ") High");
   SetIndexLabel(2,strMATypeH2+ " (" +MAPeriodHigh2 + ") High");
   SetIndexLabel(3,strMATypeL1+ " (" +MAPeriodLow1 + ") Low");
   SetIndexLabel(4,strMATypeL2+ " (" +MAPeriodLow2 + ") Low");

//---- initialization done
   return(0);
  }

int start()

{
   double MA_H1, MA_H2, MA_L1, MA_L2;
  
   int i, limit;
   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=limit; i>=0; i--)
   {
     MA_H1 = iMA(NULL,0,MAPeriodHigh1,0,MAModeH1, PRICE_HIGH,i);
     MA_H2 = iMA(NULL,0,MAPeriodHigh2,0,MAModeH2, PRICE_HIGH,i);
     MA_L1 = iMA(NULL,0,MAPeriodLow1,0,MAModeL1, PRICE_LOW,i);
     MA_L2 = iMA(NULL,0,MAPeriodLow2,0,MAModeL2, PRICE_LOW,i);
     MA_Avg[i] = (MA_H1 + MA_H2 + MA_L1 + MA_L2) / 4.0;
     if (DisplayMAs)
     {
        MA_High1[i] = MA_H1;
        MA_High2[i] = MA_H2;
        MA_Low1[i] = MA_L1;
        MA_Low2[i] = MA_L2;
     }
             
   }
   for(i=limit; i>=0; i--)
   {
     MA_Buffer[i] = iMAOnArray(MA_Avg,0,MAPeriod,0,MAMode, i);
   }
    
   return(0);
}
//+------------------------------------------------------------------+