Article-16308-MQL5-Moving-Average-From-Scratch/LWMA/LWMAonPriceCloseRAW.mq5

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                          LWMAonPriceCloseRAW.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_chart_window
#property indicator_buffers 1
#property indicator_plots   1
//--- plot MA
#property indicator_label1  "LWMA"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- input parameters
input int      InpPeriod=10;  // LWMA Period
//--- indicator buffers
double         MABuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0,MABuffer,INDICATOR_DATA);
   
//---
   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[])
  {
//--- 2 F8:;5 >B InpPeriod-1 4> B5:CI53> 10@0
   double result=0.0;
   for(int i=InpPeriod-1; i<rates_total; i++)
     {
      //--- @0AAG8BK205< 25A0 (wsum) 8 AC<<C 25A>2KE :>MDD8F85=B>2 (sum) InpPeriod 10@>2
      double sum =0.0;
      int    wsum=0;
      for(int j=InpPeriod; j>0; j--)
        {
         wsum+=j;
         sum +=close[i-j+1]*(InpPeriod-j+1);
        }
      //--- ?>;CG05< 7=0G5=85 LWMA 4;O B5:CI53> 10@0 F8:;0
      result=sum/wsum;
      //--- 0?8AK205< @57C;LB0B @0AGQB0 2 1CD5@
      MABuffer[i]=result;
     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+