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Hello,
First of all there are two settings that controls display of interval bar:
>From the User's Guide:
Tools->Preferences
Intraday tab
Align custom minute bars to regular market hours - when checked AmiBroker will trim pre-market custom interval bar so new bar will
begin exactly when trading hours start. Trading hours can be set per-database in File->Database Settings->Intraday settings. Let's
say that we have 45-minute bars. Without this setting we would bet bars starting at 9:00, 9:45, 10:30, 11:15 etc. When this is
turned on and trading starts at 9:30 we have guarantee that bars will be aligned to 9:30: 8:45, 9:30, 10:15, 11:00
Time compressed bars show bar's end date/time - decides if we want bar end time displayed or bar start time displayed. Lets say that
30 minute bar covers 9:00:00..9:29:59. When it is unchecked AmiBroker will display time of this bar as 9:00, when checked it will
display 9:29
Second thing is that interval bars are produced from trades. Let's say that we have 30 minute bar
from 9:00.00...9:29.59. And lets say that during this pre-market trading given security has only ONE trade
at 9:10.00. In that case amibroker will display 9:10 as the time of the bar to show you that first or last trade
inside given bar (depending on setting described above) occured at given minute.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "mleonsprint" <mleonsprint@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, May 24, 2003 11:15 PM
Subject: [amibroker] Tomasz is this a data BUG?
> I am far from a data pro etc. but when I pulled up a 5 minute chart
> why do I have bars not in 5 min increments? For instance when I was
> looking at my intraday chart from May 22,2003 here are the "minutes"
> from each bar
>
> 2:04 / 2:09 / 2:14 / 2:15 / 2:27 / 2:49 / 2:54 / 2:59 / 3:04 /
> 3:07 / 3:14 / 3:19 / 3:22 / 3:29 / 3:34 / 3:36 / 3:44 / 3:49 /
> 3:54 / 3:59 /
>
> to me that does not look right? I have it plotted as a 5 minute but
> those don't look like 5 minute increments.
>
> Thanks for your help
>
> Mark
>
>
>
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