GMMA

//+------------------------------------------------------------------+
//|                                                         GMMA.mq5 |
//|                             Copyright © 2011,   Nikolay Kositsin |
//|                              Khabarovsk,   farria@mail.redcom.ru |
//+------------------------------------------------------------------+
//| Place the SmoothAlgorithms.mqh file                              |
//| to the terminal_data_folder\MQL5\Include                         |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2011, Nikolay Kositsin"
#property link "farria@mail.redcom.ru"
//---- indicator version
#property version   "1.00"
//---- drawing the indicator in the main window
#property indicator_chart_window 
//+-----------------------------------+
//|  Declaration of constants         |
//+-----------------------------------+
#define LINES_SIRNAME     "GMMA" // Line constant for the indicator name
#define LINES_TOTAL         12   // The constant for the number of the indicator lines
#define RESET                0   // The constant for getting the command for the indicator recalculation back to the terminal
//+-----------------------------------+
#property description LINES_SIRNAME,LINES_TOTAL
//---- number of indicator buffers
#property indicator_buffers LINES_TOTAL 
//---- total number of graphical plots
#property indicator_plots   LINES_TOTAL
//+-----------------------------------+
//|  Indicators drawing parameters    |
//+-----------------------------------+
//---- drawing the oscillators as lines
#property indicator_type1   DRAW_LINE
//---- lines are dott-dash curves
#property indicator_style1 STYLE_SOLID
//---- lines 1 width
#property indicator_width1  1
//---- red color is used for the indicator line
#property indicator_color1 Red
#property indicator_color2 Red
#property indicator_color3 Red
#property indicator_color4 Red
#property indicator_color5 Red
#property indicator_color6 Red
//---- blue color is used for the indicator line
#property indicator_color7 Blue
#property indicator_color8 Blue
#property indicator_color9 Blue
#property indicator_color10 Blue
#property indicator_color11 Blue
#property indicator_color12 Blue
//+-----------------------------------+
//|  CXMA class description           |
//+-----------------------------------+
#include <SmoothAlgorithms.mqh> 
//+-----------------------------------+
//---- declaration of the CXMA class variables from the SmoothAlgorithms.mqh file
CXMA XMA[LINES_TOTAL];
//+-----------------------------------+
//|  Declaration of enumerations      |
//+-----------------------------------+
enum Applied_price_      // Type of constant
  {
   PRICE_CLOSE_ = 1,     // Close
   PRICE_OPEN_,          // Open
   PRICE_HIGH_,          // High
   PRICE_LOW_,           // Low
   PRICE_MEDIAN_,        // Median Price (HL/2)
   PRICE_TYPICAL_,       // Typical Price (HLC/3)
   PRICE_WEIGHTED_,      // Weighted Close (HLCC/4)
   PRICE_SIMPLE,         // Simple Price (OC/2)
   PRICE_QUARTER_,       // Quarted Price (HLOC/4) 
   PRICE_TRENDFOLLOW0_,  // TrendFollow_1 Price 
   PRICE_TRENDFOLLOW1_   // TrendFollow_2 Price 
  };
/*enum Smooth_Method - enumeration is declared in the SmoothAlgorithms.mqh file
  {
   MODE_SMA_,  // SMA
   MODE_EMA_,  // EMA
   MODE_SMMA_, // SMMA
   MODE_LWMA_, // LWMA
   MODE_JJMA,  // JJMA
   MODE_JurX,  // JurX
   MODE_ParMA, // ParMA
   MODE_T3,    // T3
   MODE_VIDYA, // VIDYA
   MODE_AMA,   // AMA
  }; */
//+-----------------------------------+
//|  Indicator input parameters       |
//+-----------------------------------+
input Smooth_Method xMA_Method=MODE_EMA; // Averaging method
input int TrLength1=3;   // 1 trader averaging period 
input int TrLength2=5;   // 2 trader averaging period 
input int TrLength3=8;   // 3 trader averaging period 
input int TrLength4=10;  // 4 trader averaging period 
input int TrLength5=12;  // 5 trader averaging period
input int TrLength6=15;  // 6 trader averaging period 

input int InvLength1=30; // 1 investor averaging period
input int InvLength2=35; // 2 investor averaging period
input int InvLength3=40; // 3 investor averaging period
input int InvLength4=45; // 4 investor averaging period
input int InvLength5=50; // 5 investor averaging period
input int InvLength6=60; // 6 investor averaging period

input int xPhase=100;                 // Smoothing parameter
input Applied_price_ IPC=PRICE_CLOSE; // Price constant
input int Shift=0;                    // Horizontal shift of the indicator in bars
//+-----------------------------------+
int period[LINES_TOTAL];
//---- declaration of the moving averages vertical shift value variable
double dPriceShift;
//---- declaration of the integer variables for the start of data calculation
int min_rates_total;
//+------------------------------------------------------------------+
//|  Variables arrays for the indicator buffers creation             |
//+------------------------------------------------------------------+  
class CIndicatorsBuffers
  {
public: double    IndBuffer[];
  };
//+------------------------------------------------------------------+
//| Indicator buffers creation                                       |
//+------------------------------------------------------------------+
CIndicatorsBuffers Ind[LINES_TOTAL];
//+------------------------------------------------------------------+   
//| Custom indicator initialization function                         | 
//+------------------------------------------------------------------+ 
void OnInit()
  {
//---- initialization of variables of the start of data calculation   
   period[0]=TrLength1;
   period[1]=TrLength2;
   period[2]=TrLength3;
   period[3]=TrLength4;
   period[4]=TrLength5;
   period[5]=TrLength6;
   period[6]=InvLength1;
   period[7]=InvLength2;
   period[8]=InvLength3;
   period[9]=InvLength4;
   period[10]=InvLength5;
   period[11]=InvLength6;

   int MaxPeriod=period[ArrayMaximum(period)];
   min_rates_total=XMA[0].GetStartBars(xMA_Method,MaxPeriod,xPhase);
//----
   for(int numb=0; numb<LINES_TOTAL; numb++)
     {
      string shortname="";
      StringConcatenate(shortname,LINES_SIRNAME,numb,"(",period[numb],")");
      //---- creating a name for displaying in a separate sub-window and in a tooltip
      PlotIndexSetString(numb,PLOT_LABEL,shortname);
      //---- setting the indicator values that won't be visible on a chart
      PlotIndexSetDouble(numb,PLOT_EMPTY_VALUE,EMPTY_VALUE);
      //---- performing the shift of the beginning of the indicator drawing
      PlotIndexSetInteger(numb,PLOT_DRAW_BEGIN,min_rates_total);
      //---- set dynamic arrays as indicator buffers
      SetIndexBuffer(numb,Ind[numb].IndBuffer,INDICATOR_DATA);
      //---- indexing the elements in buffers as timeseries   
      ArraySetAsSeries(Ind[numb].IndBuffer,true);
      //---- copying the indicator first line parameters for all the rest ones
      PlotIndexSetInteger(numb,PLOT_DRAW_TYPE,PlotIndexGetInteger(0,PLOT_DRAW_TYPE));
      PlotIndexSetInteger(numb,PLOT_LINE_STYLE,PlotIndexGetInteger(0,PLOT_LINE_STYLE));
      PlotIndexSetInteger(numb,PLOT_LINE_WIDTH,PlotIndexGetInteger(0,PLOT_LINE_WIDTH));
     }

//---- initializations of a variable for the indicator short name
   string shortname;
   string Smooth1=XMA[0].GetString_MA_Method(xMA_Method);
   StringConcatenate(shortname,LINES_SIRNAME,LINES_TOTAL,"(",Smooth1,")");
//--- creation of the name to be displayed in a separate sub-window and in a tooltip
   IndicatorSetString(INDICATOR_SHORTNAME,shortname);

//--- determination of accuracy of displaying the indicator values
   IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1);
//---- initialization end
  }
//+------------------------------------------------------------------+ 
//| Custom indicator iteration function                              | 
//+------------------------------------------------------------------+ 
int OnCalculate(const int rates_total,    // number of bars in history at the current tick
                const int prev_calculated,// number of bars calculated at previous call
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---- checking the number of bars to be enough for the calculation
   if(rates_total<min_rates_total) return(RESET);

//---- declarations of local variables 
   int bar,limit,maxbar;
   double price_;

   maxbar=rates_total-1;

//---- calculation of the 'limit' starting index for the bars recalculation loop
   if(prev_calculated>rates_total || prev_calculated<=0) // checking for the first start of the indicator calculation
      limit=rates_total-1;                 // starting index for calculation of all bars
   else limit=rates_total-prev_calculated; // starting index for calculation of new bars

//---- indexing elements in arrays as timeseries  
   ArraySetAsSeries(open,true);
   ArraySetAsSeries(high,true);
   ArraySetAsSeries(low,true);
   ArraySetAsSeries(close,true);

//---- main indicator calculation loop
   for(bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      //---- call of the PriceSeries function to get the input price 'price_'
      price_=PriceSeries(IPC,bar,open,low,high,close);

      for(int numb=0; numb<LINES_TOTAL; numb++)
         Ind[numb].IndBuffer[bar]=XMA[numb].XMASeries(maxbar,prev_calculated,rates_total,xMA_Method,xPhase,period[numb],price_,bar,true);
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+