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2024-01-25 04:03:36 +03:30
commit 0a19e0f4e1
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+//+------------------------------------------------------------------+
+//|                                                    Alligator.mq4 |
+//|                   Copyright 2005-2014, MetaQuotes Software Corp. |
+//|                                              http://www.mql4.com |
+//+------------------------------------------------------------------+
+#property copyright   "2005-2014, MetaQuotes Software Corp."
+#property link        "http://www.mql4.com"
+#property description "Bill Williams' Aligator"
+#property strict
+
+//---- indicator settings
+#property indicator_chart_window
+#property indicator_buffers 3
+#property indicator_color1  Blue
+#property indicator_color2  Red
+#property indicator_color3  Lime
+//---- input parameters
+input int InpJawsPeriod=13; // Jaws Period
+input int InpJawsShift=8;   // Jaws Shift
+input int InpTeethPeriod=8; // Teeth Period
+input int InpTeethShift=5;  // Teeth Shift
+input int InpLipsPeriod=5;  // Lips Period
+input int InpLipsShift=3;   // Lips Shift
+//---- indicator buffers
+double ExtBlueBuffer[];
+double ExtRedBuffer[];
+double ExtLimeBuffer[];
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function                         |
+//+------------------------------------------------------------------+
+void OnInit(void)
+  {
+   IndicatorDigits(Digits);
+//---- line shifts when drawing
+   SetIndexShift(0,InpJawsShift);
+   SetIndexShift(1,InpTeethShift);
+   SetIndexShift(2,InpLipsShift);
+//---- first positions skipped when drawing
+   SetIndexDrawBegin(0,InpJawsShift+InpJawsPeriod);
+   SetIndexDrawBegin(1,InpTeethShift+InpTeethPeriod);
+   SetIndexDrawBegin(2,InpLipsShift+InpLipsPeriod);
+//---- 3 indicator buffers mapping
+   SetIndexBuffer(0,ExtBlueBuffer);
+   SetIndexBuffer(1,ExtRedBuffer);
+   SetIndexBuffer(2,ExtLimeBuffer);
+//---- drawing settings
+   SetIndexStyle(0,DRAW_LINE);
+   SetIndexStyle(1,DRAW_LINE);
+   SetIndexStyle(2,DRAW_LINE);
+//---- index labels
+   SetIndexLabel(0,"Gator Jaws");
+   SetIndexLabel(1,"Gator Teeth");
+   SetIndexLabel(2,"Gator Lips");
+  }
+//+------------------------------------------------------------------+
+//| Bill Williams' Alligator                                         |
+//+------------------------------------------------------------------+
+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=rates_total-prev_calculated;
+//---- main loop
+   for(int i=0; i<limit; i++)
+     {
+      //---- ma_shift set to 0 because SetIndexShift called abowe
+      ExtBlueBuffer[i]=iMA(NULL,0,InpJawsPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
+      ExtRedBuffer[i]=iMA(NULL,0,InpTeethPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
+      ExtLimeBuffer[i]=iMA(NULL,0,InpLipsPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
+     }
+//---- done
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+