[amibroker] bar number of first bar of the day 5-min

["kar_avi" <kar_avi@xxxxxxxxx>]

This is used to get the Open and Close of the first bar in a 5 min
chart as given by TJ.

DayChange = DateNum() != Ref( DateNum(), -1 );

FirstBarOpenInDay = ValueWhen( DayChange, Open );

FirstBarCloseInDay = ValueWhen( DayChange, Close );


Now can I use the following to get the bar number of the first bar.

***********

FirstBar = ValueWhen( DayChange, BarIndex() );

LastBar = BarCount - 1;

NoBars = lastvalue(BarCount  - FirstBar);

***********
Will this be problematic because of QuickAFL and Barindex().

In my program, the LastBar value changes the *second* time it is
refreshed *without adding any new bar*. E.G if LastBar was 12466 the
first time, it becomes 10111 to even 197 the second time and retains
this value.

I want this as I want to draw the HHV(H,4) for all 4 consecutive bars
starting from the FirstBar (first bar of the day onwards).

Any help will be appreciated.

Regards,
Kar



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