【MT4マルチタイムフレーム】オンバランスボリューム（MTF-OBV）

//+------------------------------------------------------------------+
//|                                                      MTF-OBV.mq4 |
//|                                  Copyright 2022,Greeds Co., Ltd. |
//|                                               https://greeds.net |
//+------------------------------------------------------------------+
#property copyright "Copyright 2022,Greeds Co., Ltd."
#property link      "https://greeds.net"
#property version   "1.00"
#property strict
#property indicator_separate_window
#property  indicator_color1  DodgerBlue

#property  indicator_buffers 1

double     Buf1[];

input ENUM_TIMEFRAMES in_timeFrame = PERIOD_CURRENT;            // マルチタイムフレーム
input ENUM_APPLIED_PRICE in_applied_price=PRICE_CLOSE;          // 適用価格

int OnInit()
{
  SetIndexBuffer(0, Buf1 );
  SetIndexStyle(0, DRAW_LINE , STYLE_SOLID , 1 );

  return( INIT_SUCCEEDED );
}

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 = Bars - prev_calculated;
  for(int i=0; i<limit; i++)
  {
    int shift = iBarShift(NULL, in_timeFrame, time[i]);
    double obv = iOBV(NULL,in_timeFrame,in_applied_price,shift);
    Buf1[i] = obv;
  }
  return(rates_total);
}