Exibir indicador personalizado

[Francisco Alexandre Da Cruz Junior]

Boa tarde eu personalizei um indicador existente, porém ao adicionar ao MT5 o indicador nao é exibido na janela.

//+------------------------------------------------------------------+

//|                                                           MR.mq5 |

//|                                                 Alexandre Jùnior |

//|                                              http://www.mql5.com |

//+------------------------------------------------------------------+

#property copyright   "Alexandre Júnior"

#property link        "http://www.mql5.com"

#property version     "1.00"

#property description "Média Rápida"

#include <MovingAverages.mqh>

#property indicator_chart_window

#property indicator_buffers 2

#property indicator_plots   1

//--- plot ExtMRBuffer

#property indicator_label1  "MR"

#property indicator_type1   DRAW_LINE

#property indicator_color1  Yellow

#property indicator_style1  STYLE_SOLID

#property indicator_width1  2

//--- default applied price

#property indicator_applied_price PRICE_CLOSE

//--- input parameters

input int InpPeriodMR=8;      // MR period

input int InpShiftMR=0;        // MR shift

//--- indicator buffer

double    ExtMRBuffer[];

double    ExtMRBuffer2[];

double    ExtFastSC;

int       ExtPeriodMR;

int       InpMRPeriod;

int       ExtMRPeriod;

//+------------------------------------------------------------------+

//| MR initialization function                                      |

//+------------------------------------------------------------------+

void OnInit()

  {

//--- check for input values

   if(InpPeriodMR<=0)

     {

      ExtPeriodMR=17;

      PrintFormat("Input parameter InpPeriodMR has incorrect value (%d). Indicator will use value %d for calculations.",

                  InpPeriodMR,ExtPeriodMR);

     }

   else

      ExtPeriodMR=InpPeriodMR;

      

//--- indicator buffers mapping

   SetIndexBuffer(0,ExtMRBuffer,INDICATOR_DATA);

//--- set accuracy

   IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1);

//--- sets first bar from what index will be drawn

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtPeriodMR);

//--- set index shift

   PlotIndexSetInteger(0,PLOT_SHIFT,InpShiftMR);

//--- set shortname and change label

   string short_name=StringFormat("MR(%d)",ExtPeriodMR);

   IndicatorSetString(INDICATOR_SHORTNAME,short_name);

   PlotIndexSetString(0,PLOT_LABEL,short_name);

  }

//+------------------------------------------------------------------+

//| AMA iteration function                                           |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const int begin,

                const double &price[])

  {

   int i;

//--- check for rates count

   if(rates_total<ExtPeriodMR+begin)

      return(0);

//--- draw begin may be corrected

   if(begin!=0)

      PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtPeriodMR+begin);

//--- detect position

   int pos=prev_calculated-1;

//--- first calculations

   if(pos<ExtPeriodMR+begin)

     {

      pos=ExtPeriodMR+begin;

      for(i=0; i<pos-1; i++)

         ExtMRBuffer[i]=0.0;

      ExtMRBuffer[pos-1]=price[pos-1];

     }

//--- main cycle

   for(i=pos; i<rates_total && !IsStopped(); i++)

     { 

      //--- calculate MR

      if(i==InpMRPeriod-1)

               ExtMRBuffer[i]=SimpleMA(i,InpMRPeriod,price);

            else

               ExtMRBuffer[i]=ExponentialMA(i,InpMRPeriod,ExtMRBuffer[i-1],price);

            //--- Calculate StdDev

            ExtMRBuffer2[i]=StdDevFunc(price,ExtMRBuffer,i);

           }

     

//--- return value of prev_calculated for next call

   return(rates_total);

  }

//+------------------------------------------------------------------+

//| Calculate DESV value                                               |

//+------------------------------------------------------------------+

double StdDevFunc(const double &price[],const double &ma_price[],const int position)

  {

   double dev=0.0;

   for(int i=0; i<ExtMRPeriod; i++)

      dev+=MathPow(price[position-i]-ma_price[position],2.0);

   dev=MathSqrt(dev/ExtMRPeriod);

   return(dev);

  }

//+------------------------------------------------------------------+