Cumulative Volume for Intraday

Cumulative-Volume-Intraday.afl

_SECTION_BEGIN("Cumulative Volume");
/*
To get cumulative Volume for intraday, we need to Sum Volume from the beginning bar of the Day

Example :
  9:15  - volume(9:15)
  9:20 - volume(9:15+9:20)
  9:25 -volume(9:15+9:20+9:25)

1. Get start bar of the day
2. Get cumulative number of bars from first bar of the day
3. Use sum function
*/

BarT = BarIndex() - Nz(ValueWhen(Day()!= Ref(Day(),-1) ,BarIndex()),0) + 1;
CumVol = Sum(V,BarT);
GfxSetBkMode(0);
GfxSelectFont( "Georgia", 12, 800, False );
GfxSetTextColor( colorYellow );
GfxTextOut( "CumVol: "+CumVol, 5, 100 );
_SECTION_END();