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commodity-channel-index.mq5

Time: 2014-05-20 | Download file:commodity-channel-index.mq5

//+------------------------------------------------------------------+
//|                                                          CCI.mq5 |
//|                        Copyright 2009, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright   "2009, MetaQuotes Software Corp."
#property link        "http://www.mql5.com"
#property description "Commodity Channel Index"
#include 
//---
#property indicator_separate_window
#property indicator_buffers       4
#property indicator_plots         1
#property indicator_type1         DRAW_LINE
#property indicator_color1        LightSeaGreen
#property indicator_level1       -100.0
#property indicator_level2        100.0
#property indicator_applied_price PRICE_TYPICAL
//--- input parametrs
input int  InpCCIPeriod=14; // Period
//--- global variable
int        ExtCCIPeriod;
//---- indicator buffer
double     ExtSPBuffer[];
double     ExtDBuffer[];
double     ExtMBuffer[];
double     ExtCCIBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void OnInit()
  {
//--- check for input value of period
   if(InpCCIPeriod<=0)
     {
      ExtCCIPeriod=14;
      printf("Incorrect value for input variable InpCCIPeriod=%d. Indicator will use value=%d for calculations.",InpCCIPeriod,ExtCCIPeriod);
     }
   else ExtCCIPeriod=InpCCIPeriod;
//--- define buffers
   SetIndexBuffer(0,ExtCCIBuffer);
   SetIndexBuffer(1,ExtDBuffer,INDICATOR_CALCULATIONS);
   SetIndexBuffer(2,ExtMBuffer,INDICATOR_CALCULATIONS);
   SetIndexBuffer(3,ExtSPBuffer,INDICATOR_CALCULATIONS);
//--- indicator name
   IndicatorSetString(INDICATOR_SHORTNAME,"CCI("+string(ExtCCIPeriod)+")");
//--- indexes draw begin settings
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtCCIPeriod-1);
//--- number of digits of indicator value
   IndicatorSetInteger(INDICATOR_DIGITS,2);
//---- OnInit done
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const int begin,
                const double &price[])
  {
//--- variables
   int    i,j;
   double dTmp,dMul=0.015/ExtCCIPeriod;
//--- start calculation
   int StartCalcPosition=(ExtCCIPeriod-1)+begin;
//--- check for bars count
   if(rates_total0) PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,StartCalcPosition+(ExtCCIPeriod-1));
//--- calculate position
   int pos=prev_calculated-1;
   if(pos        

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