First commit [09/03/2018]

2018-03-09 16:43:19 +01:00
commit 25e9006a0b
375 changed files with 294601 additions and 0 deletions
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+//+------------------------------------------------------------------+
+//|                                                          ATR.mq5 |
+//|                   Copyright 2009-2017, MetaQuotes Software Corp. |
+//|                                              http://www.mql5.com |
+//+------------------------------------------------------------------+
+#property copyright   "2009-2017, MetaQuotes Software Corp."
+#property link        "http://www.mql5.com"
+#property description "Average True Range"
+//--- indicator settings
+#property indicator_separate_window
+#property indicator_buffers 2
+#property indicator_plots   1
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  DodgerBlue
+#property indicator_label1  "ATR"
+//--- input parameters
+input int InpAtrPeriod=14;  // ATR period
+//--- indicator buffers
+double    ExtATRBuffer[];
+double    ExtTRBuffer[];
+//--- global variable
+int       ExtPeriodATR;
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function                         |
+//+------------------------------------------------------------------+
+void OnInit()
+  {
+//--- check for input value
+   if(InpAtrPeriod<=0)
+     {
+      ExtPeriodATR=14;
+      printf("Incorrect input parameter InpAtrPeriod = %d. Indicator will use value %d for calculations.",InpAtrPeriod,ExtPeriodATR);
+     }
+   else ExtPeriodATR=InpAtrPeriod;
+//--- indicator buffers mapping
+   SetIndexBuffer(0,ExtATRBuffer,INDICATOR_DATA);
+   SetIndexBuffer(1,ExtTRBuffer,INDICATOR_CALCULATIONS);
+//---
+   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
+//--- sets first bar from what index will be drawn
+   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpAtrPeriod);
+//--- name for DataWindow and indicator subwindow label
+   string short_name="ATR("+string(ExtPeriodATR)+")";
+   IndicatorSetString(INDICATOR_SHORTNAME,short_name);
+   PlotIndexSetString(0,PLOT_LABEL,short_name);
+//--- initialization done
+  }
+//+------------------------------------------------------------------+
+//| Average True Range                                               |
+//+------------------------------------------------------------------+
+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 i,limit;
+//--- check for bars count
+   if(rates_total<=ExtPeriodATR)
+      return(0); // not enough bars for calculation
+//--- preliminary calculations
+   if(prev_calculated==0)
+     {
+      ExtTRBuffer[0]=0.0;
+      ExtATRBuffer[0]=0.0;
+      //--- filling out the array of True Range values for each period
+      for(i=1;i<rates_total && !IsStopped();i++)
+         ExtTRBuffer[i]=MathMax(high[i],close[i-1])-MathMin(low[i],close[i-1]);
+      //--- first AtrPeriod values of the indicator are not calculated
+      double firstValue=0.0;
+      for(i=1;i<=ExtPeriodATR;i++)
+        {
+         ExtATRBuffer[i]=0.0;
+         firstValue+=ExtTRBuffer[i];
+        }
+      //--- calculating the first value of the indicator
+      firstValue/=ExtPeriodATR;
+      ExtATRBuffer[ExtPeriodATR]=firstValue;
+      limit=ExtPeriodATR+1;
+     }
+   else limit=prev_calculated-1;
+//--- the main loop of calculations
+   for(i=limit;i<rates_total && !IsStopped();i++)
+     {
+      ExtTRBuffer[i]=MathMax(high[i],close[i-1])-MathMin(low[i],close[i-1]);
+      ExtATRBuffer[i]=ExtATRBuffer[i-1]+(ExtTRBuffer[i]-ExtTRBuffer[i-ExtPeriodATR])/ExtPeriodATR;
+     }
+//--- return value of prev_calculated for next call
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+