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2026-07-27 20:47:44 +00:00 · 2025-08-29 10:01:26 +02:00
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+//+------------------------------------------------------------------+
+//|                                               RSI_Oscillator.mq5 |
+//|                      Copyright 2025, xxxxxxxx                    |
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "1.00"
+#property description "RSI Oscillator (Histogram of RSI vs Signal Line)"
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_separate_window
+#property indicator_buffers 1
+#property indicator_plots   1
+#property indicator_type1   DRAW_HISTOGRAM
+#property indicator_color1  clrSilver
+#property indicator_width1  1
+#property indicator_label1  "RSI Oscillator"
+#property indicator_level1  0.0
+#property indicator_levelstyle STYLE_DOT
+
+//--- Input Parameters ---
+input int                 InpPeriodRSI    = 14;
+input ENUM_APPLIED_PRICE  InpAppliedPrice = PRICE_CLOSE;
+input group               "Signal Line Settings"
+input int                 InpPeriodMA     = 14;
+input ENUM_MA_METHOD      InpMethod       = MODE_SMA;
+
+//--- Indicator Buffers ---
+double    BufferOscillator[];
+
+//--- Global Variables ---
+int       g_ExtPeriodRSI, g_ExtPeriodMA;
+int       g_handle_rsi;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   g_ExtPeriodRSI = (InpPeriodRSI < 1) ? 1 : InpPeriodRSI;
+   g_ExtPeriodMA  = (InpPeriodMA < 1) ? 1 : InpPeriodMA;
+
+   SetIndexBuffer(0, BufferOscillator, INDICATOR_DATA);
+   ArraySetAsSeries(BufferOscillator, false);
+
+   int draw_begin = g_ExtPeriodRSI + g_ExtPeriodMA - 1;
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, draw_begin);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("RSI Osc(%d,%d)", g_ExtPeriodRSI, g_ExtPeriodMA));
+   IndicatorSetInteger(INDICATOR_DIGITS, 2);
+
+   g_handle_rsi = iRSI(_Symbol, _Period, g_ExtPeriodRSI, InpAppliedPrice);
+   if(g_handle_rsi == INVALID_HANDLE)
+     {
+      Print("Error creating iRSI handle.");
+      return(INIT_FAILED);
+     }
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator deinitialization function.                      |
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+   IndicatorRelease(g_handle_rsi);
+  }
+
+//+------------------------------------------------------------------+
+//| RSI Oscillator calculation 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 start_pos = g_ExtPeriodRSI + g_ExtPeriodMA - 1;
+   if(rates_total <= start_pos)
+      return(0);
+
+//--- Internal Buffers for calculation ---
+   double buffer_rsi[], buffer_signal[];
+   ArrayResize(buffer_rsi, rates_total);
+   ArrayResize(buffer_signal, rates_total);
+
+//--- STEP 1: Get RSI values
+   if(CopyBuffer(g_handle_rsi, 0, 0, rates_total, buffer_rsi) < rates_total)
+     {
+      Print("Error copying RSI buffer data.");
+     }
+
+//--- STEP 2: Calculate the Signal Line (MA of RSI)
+   for(int i = start_pos; i < rates_total; i++)
+     {
+      switch(InpMethod)
+        {
+         case MODE_EMA:
+         case MODE_SMMA:
+            if(i == start_pos)
+              {
+               double sum=0;
+               for(int j=0; j<g_ExtPeriodMA; j++)
+                  sum+=buffer_rsi[i-j];
+               buffer_signal[i] = sum/g_ExtPeriodMA;
+              }
+            else
+              {
+               if(InpMethod == MODE_EMA)
+                 {
+                  double pr=2.0/(g_ExtPeriodMA+1.0);
+                  buffer_signal[i] = buffer_rsi[i]*pr + buffer_signal[i-1]*(1.0-pr);
+                 }
+               else
+                  buffer_signal[i] = (buffer_signal[i-1]*(g_ExtPeriodMA-1)+buffer_rsi[i])/g_ExtPeriodMA;
+              }
+            break;
+         case MODE_LWMA:
+           {
+            double lwma_sum=0, weight_sum=0;
+            for(int j=0; j<g_ExtPeriodMA; j++)
+              {
+               int weight=g_ExtPeriodMA-j;
+               lwma_sum+=buffer_rsi[i-j]*weight;
+               weight_sum+=weight;
+              }
+            if(weight_sum>0)
+               buffer_signal[i]=lwma_sum/weight_sum;
+           }
+         break;
+         default: // MODE_SMA
+           {
+            double sum=0;
+            for(int j=0; j<g_ExtPeriodMA; j++)
+               sum+=buffer_rsi[i-j];
+            buffer_signal[i] = sum/g_ExtPeriodMA;
+           }
+         break;
+        }
+     }
+
+//--- STEP 3: Calculate the final Oscillator value
+   for(int i = start_pos; i < rates_total; i++)
+     {
+      BufferOscillator[i] = buffer_rsi[i] - buffer_signal[i];
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+