Initial commit: MQL5 Indicators Collection (MetaTrader 5) - Part 3

2025-06-24 00:49:58 +01:00
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+# 🚀 Unlock the Power of Trading!
+
+Welcome to this open-source trading project. Here you will find powerful tools to enhance your trading journey. If you find this project useful, please consider starring ⭐, sharing, or donating to support further development!
+
+---
+
+**Support the project:**
+- Star this repository on GitHub
+- Share it with your trading friends
+- [Donate here](https://www.paypal.com/donate/?hosted_button_id=YOUR_BUTTON_ID) to help us grow!
+
+---
+
+## Files included:
+### Source Files:
+- `netvolume.mq5`
+
+### Screenshots:
+![Screenshot](terminal64_BTH0AnnBlf.png)
+
+> Made with ❤️ for the trading community.
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+//+------------------------------------------------------------------+
+//|                                                    NetVolume.mq5 |
+//|                                  Copyright 2024, MetaQuotes Ltd. |
+//|                                             https://www.mql5.com |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2024, MetaQuotes Ltd."
+#property link      "https://www.mql5.com"
+#property version   "1.00"
+#property indicator_separate_window
+#property indicator_buffers 1
+#property indicator_plots   1
+
+//--- plot ExtNV
+#property indicator_label1  "NV"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrBlue
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  1
+
+//--- input parameters
+input ENUM_APPLIED_VOLUME  InpVolume   =  VOLUME_TICK;   // Volume
+
+//--- indicator buffers
+double         ExtBufferNV[];
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function                         |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+//--- indicator buffers mapping
+   SetIndexBuffer(0,ExtBufferNV,INDICATOR_DATA);
+   
+//--- setting buffer arrays as timeseries
+   ArraySetAsSeries(ExtBufferNV,true);
+   
+//--- setting the short name and levels for the indicator
+   IndicatorSetString(INDICATOR_SHORTNAME,"Net Volume");
+   IndicatorSetInteger(INDICATOR_LEVELS,1);
+   IndicatorSetDouble(INDICATOR_LEVELVALUE,0, 0.0);
+
+//--- success
+   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[])
+  {
+//--- checking for the minimum number of bars for calculation
+   if(rates_total<2)
+      return 0;
+      
+//--- setting predefined indicator arrays as timeseries
+   ArraySetAsSeries(close,true);
+   ArraySetAsSeries(volume,true);
+   ArraySetAsSeries(tick_volume,true);
+   
+//--- checking and calculating the number of bars to be calculated
+   int limit=rates_total-prev_calculated;
+   if(limit>1)
+     {
+      limit=rates_total-2;
+      ArrayInitialize(ExtBufferNV,EMPTY_VALUE);
+     }
+     
+//--- calculation Net Volume
+   for(int i=limit; i>=0; i--)
+     {
+      double v=close[i]-close[i+1];
+      char   sign=(v<0 ? -1 : v>0 ? 1 : 0);
+      ExtBufferNV[i]=double(sign*(InpVolume==VOLUME_TICK ? tick_volume[i] : volume[i]));
+     }
+//--- return value of prev_calculated for next call
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+