i_DCG_ModStDev_v2

//+------------------------------------------------------------------+
//|                                                                  |
//|                FileName: i_DCG_ModStDev.mq4                      |
//| Author: Copyright © 2005, Fermin Da Costa Gomez                  |
//| Description: This indicator measures                             |
//|                                                                  |
//| Version: 000 20050728 14:52 GMT                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Fermin Da Costa Gomez"
#property link      "http://forex.viahetweb.nl"
//----
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Silver
#property indicator_color2 Red
#property indicator_color3 Lime
#property indicator_color4 SkyBlue
//---- External parameters
extern int _maPeriod=12;
//---- indicator buffers
double _sd[];
double _sdMa[];
double _sdMa2[];
double _sdPower[];
double _sdPowerMa[];
//----
int ExtCountedBars=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
  int init() 
  {
   int    draw_begin;
   string short_name;
   IndicatorBuffers(5);
//---- indicator buffers mapping
   SetIndexBuffer(0, _sdPower);
   SetIndexEmptyValue(0, 0.0);
   SetIndexStyle(0, DRAW_HISTOGRAM);
   SetIndexBuffer(1, _sdPowerMa);
   SetIndexEmptyValue(1, 0.0);
   SetIndexStyle(1, DRAW_LINE);
   SetIndexBuffer(3, _sd);
   SetIndexEmptyValue(3, 0.0);
   SetIndexStyle(3, DRAW_LINE);
   SetIndexBuffer(4, _sdMa);
   SetIndexEmptyValue(4, 0.0);
   SetIndexStyle(4, DRAW_LINE);
   SetIndexBuffer(2, _sdMa2);
   SetIndexEmptyValue(2, 0.0);
   SetIndexStyle(2, DRAW_LINE);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| CalculateIndicators                                                                 |
//+------------------------------------------------------------------+
  void calculateIndicators(int i) 
  {
   double m10, m11, m20, m21;
   int fastPeriod=_maPeriod*0.382;
   _sd[i]=iStdDev(Symbol(), 0, _maPeriod, MODE_LWMA, 0, PRICE_CLOSE, i);
   _sdMa[i]=iMAOnArray(_sd, 0, _maPeriod, 0, MODE_LWMA, i);
   _sdMa2[i]=iMAOnArray(_sd, 0, _maPeriod*MathSqrt(_maPeriod), 0, MODE_LWMA, i);
   _sdPower[i]= _sdMa[i]-_sdMa2[i];
   _sdPowerMa[i]=iMAOnArray(_sdPower, 0, _maPeriod*1.618, 0, MODE_LWMA, i);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int start() 
  {
   int i, shift, counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
   int limit=Bars-counted_bars;
//----   
   if(counted_bars>0) limit++;
//---- moving average
     for(i=limit; i>=0; i--) 
     {
      //calculateIndicators(i);
      double m10, m11, m20, m21;
      int fastPeriod=_maPeriod*0.382;
      _sd[i]=iStdDev(Symbol(), 0, _maPeriod, MODE_LWMA, 0, PRICE_CLOSE, i);
      _sdMa[i]=iMAOnArray(_sd, 0, _maPeriod, 0, MODE_LWMA, i);
      _sdMa2[i]=iMAOnArray(_sd, 0, _maPeriod*MathSqrt(_maPeriod), 0, MODE_LWMA, i);
      _sdPower[i]= _sdMa[i]-_sdMa2[i];
      _sdPowerMa[i]=iMAOnArray(_sdPower, 0, _maPeriod*1.618, 0, MODE_LWMA, i);
     }
   return(0);
  }
//+------------------------------------------------------------------+