Re: [amibroker] Cum of Sum young guy

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

Did you switch periodicity to "Intraday"?

Plus, don't add that "1". should be
Sum( V, BarsSince( newDay ) )

or better yet,

cv = Cum( Volume );

intradaycumvolume = cv - ValueWhen( newDay, cv );

Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message ----- 
From: "Julian" <juliangoodsell@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, February 20, 2009 8:55 AM
Subject: [amibroker] Cum of Sum young guy


> The code below creates a cumulative volume for intraday data. Well
> almost. It works perfectly for every day except the first one.
> 
> d = Day();
> newDay = d != Ref(d, -1);
> newDay[0] = 1;
> bs = BarsSince(newDay)+1;
> CumVolume = Sum(V, bs);
> 
> Sum(V, bs) is filling the first bar of the CumVolume array with
> {EMPTY}. Sum(V, 1) however works. I've traced the first value in the
> bs array and it is always 1.
> I can't work it out. Any ideas?
> 
> Cheers,
> Jules.
> 
> Wayne's World! Wayne's World! Party on! Excellent! :)
> 
> 
> 
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