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+//+------------------------------------------------------------------+
+//|                                                      FDI_Pro.mq5 |
+//|                                          Copyright 2026, xxxxxxxx|
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2026, xxxxxxxx"
+#property version   "1.00"
+#property description "Fractal Dimension Index (Sevcik)."
+#property description "1.0 = Linear Trend, 1.5 = Random, 2.0 = Chaos."
+
+#property indicator_separate_window
+#property indicator_buffers 2
+#property indicator_plots   1
+
+// Levels
+#property indicator_level1 1.5
+#property indicator_levelcolor clrSilver
+#property indicator_levelstyle STYLE_DOT
+
+// Plot: FDI
+#property indicator_label1  "FDI"
+#property indicator_type1   DRAW_COLOR_HISTOGRAM
+// Colors: Trend (Lime), Random/Chop (Gray)
+#property indicator_color1  clrLime, clrGray
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  2
+
+#include <MyIncludes\FDI_Calculator.mqh>
+
+//--- Input Parameters
+input int             InpPeriod      = 30;           // Analysis Period
+input ENUM_APPLIED_PRICE InpPrice    = PRICE_CLOSE;  // Price Source
+
+//--- Buffers
+double BufFDI[];
+double BufColor[];
+
+//--- Calculator
+CFDICalculator *g_calc;
+
+//+------------------------------------------------------------------+
+//| Init                                                             |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   SetIndexBuffer(0, BufFDI, INDICATOR_DATA);
+   SetIndexBuffer(1, BufColor, INDICATOR_COLOR_INDEX);
+
+   string name = StringFormat("FDI(%d)", InpPeriod);
+   IndicatorSetString(INDICATOR_SHORTNAME, name);
+   IndicatorSetInteger(INDICATOR_DIGITS, 2);
+
+   g_calc = new CFDICalculator();
+   if(!g_calc.Init(InpPeriod))
+      return INIT_FAILED;
+
+   return(INIT_SUCCEEDED);
+  }
+
+void OnDeinit(const int r) { if(CheckPointer(g_calc)==POINTER_DYNAMIC) delete g_calc; }
+
+//+------------------------------------------------------------------+
+//| Calculate                                                        |
+//+------------------------------------------------------------------+
+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[])
+  {
+   if(rates_total < InpPeriod)
+      return 0;
+
+   g_calc.Calculate(rates_total, prev_calculated, InpPrice, open, high, low, close, BufFDI);
+
+// Color Logic
+   int start = (prev_calculated > 0) ? prev_calculated - 1 : InpPeriod;
+
+   for(int i = start; i < rates_total; i++)
+     {
+      double fdi = BufFDI[i];
+
+      if(fdi < 1.5)
+         BufColor[i] = 0.0; // Lime (Trend)
+      else
+         BufColor[i] = 1.0; // Gray (Chaos)
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+