Days of the week

ÿþ//+------------------------------------------------------------------+

//|                                             Days of the week.mq5 |

//|                              Copyright © 2018, Vladimir Karputov |

//|                                           http://wmua.ru/slesar/ |

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

#property copyright "Copyright © 2018, Vladimir Karputov"

#property link      "http://wmua.ru/slesar/"

#property version   "1.000"

#property indicator_separate_window

#property description "Days of the week in the form of a histogram"



#property indicator_separate_window 

#property indicator_buffers 1 

#property indicator_plots   1 

//--- plot Histogram 

#property indicator_label1  "Day" 

#property indicator_type1   DRAW_HISTOGRAM 

#property indicator_color1  clrGray 

#property indicator_style1  STYLE_SOLID 

#property indicator_width1  2

//--- indicator buffers 

double         HistogramBuffer[];

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,HistogramBuffer,INDICATOR_DATA);

//--- indicator digits

   IndicatorSetInteger(INDICATOR_DIGITS,0);

//--- indicator short name

   IndicatorSetString(INDICATOR_SHORTNAME,"Day");

//---

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              |

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

int OnCalculate(const int rates_total,

                const int prev_calculated,

                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[])

  {

//---

   int limit=prev_calculated-1;

   if(prev_calculated==0)

      limit=0;

   for(int i=limit;i<rates_total;i++)

     {

      MqlDateTime STime;

      TimeToStruct(time[i],STime);

      switch(STime.day_of_week)

        {

         case  0:

            HistogramBuffer[i]=0;

            break;

         case  1:

            HistogramBuffer[i]=1;

            break;

         case  2:

            HistogramBuffer[i]=2;

            break;

         case  3:

            HistogramBuffer[i]=3;

            break;

         case  4:

            HistogramBuffer[i]=4;

            break;

         case  5:

            HistogramBuffer[i]=5;

            break;

         case  6:

            HistogramBuffer[i]=6;

            break;

        }

     }

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

   return(rates_total);

  }

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