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Thomas,
Thanks for the wonderful news. I will give that a try. Didn't
realize I could change the database time setting without corrupting
it. Thanks again.
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
wrote:
>
> Hello,
>
> If you think it is superior - voila - go to File->Database
Settings,
> set Base time interval to 1-minute, then backfill,
> then switch to tick and backfill again.
> You will get the same result.
>
> Personally I don't think it is superior because
> a) getting 1-minute, 30 sec and 1 second data requires
> THREE backfills and it is THREE times slower
> b) above also consumes 3x the bandwidth
>
> As for "tick backfill" there is no such thing in TWS - it offers
> only 1 second finest resolution.
>
> As for "actual trading" - regardless of periodicity selected
> last (current) bar is always updated with every tick.
>
> And if you can't use AmiBroker - that's fine with me -
> please go on and use other platform and stop wasting bandwidth
here.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "bj012859" <byronjames@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Wednesday, October 19, 2005 3:54 PM
> Subject: [amibroker] Re: Sierra charts vs. Amibroker on IB
backfills
>
>
> >
> > OK, on futher evaluation, on sierra charts I have the back fill
set
> > for maximum 5 day backfill, it goes and gets the data in
increments
> > of 30 sec's, then reverts to second based data as it gets new
data
> > from the API. This method, I find far superior. It allows
enough
> > data to see what happened on prior days, sets up my indicators
so
> > that I can intraday trade, and reverts to the fastest level for
> > actual trading.
> >
> > Thomas, please consider the above approach as a plugin option,
to
> > allow full 5-day backfill (at less resolution) when using tick
or
> > second based database. A possibility could be to allow the 5-
day
> > backfill at 30sec or 1m, then refill at the 5 sec, then at the
1sec
> > or tick level, to get the most and best data based on what the
user
> > has set in their database. True, this would be a slower
backfill
> > option, and plenty are whining about backfill speeds, but
without
> > 24h backfill minimum, I can't use Amibroker as an intraday
trading
> > platform.
> >
> > Thx,
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "bj012859" <byronjames@xxxx>
wrote:
> >>
> >> Hope I'm doing something wrong because I would rather use
> > amibroker
> >> because of the ease in programming; but, I am not getting even
> > close
> >> to the same backfills between the two products (using same
> > computer
> >> and same IB API. I read a message that stated that if you set
the
> >> database to ticks then u will only get 1000 bars of data under
> >> amibroker. That's what it appears i'm getting with AB 4.73beta
> > and
> >> 1.43 plugin. Sierra chart is giving me 5 full days worth of
> > second-
> >> based data somehow (their sw is set up to provide 120 days, but
5
> >> day limitation is with IB).
> >>
> >> I use 250, 600 & 3000 volume charts for trading, hence second
or
> >> tick based feed is critical. I like the way amibroker displays
> > the
> >> volume charts, much better than sierra, but can't get by with
the
> >> extremely limited backfill provided through amibroker.
> >>
> >> The packages use the same IB API. I just don't get it. If
there
> >> are any other sierra chart users here, please help Thomas to
> >> understand the difference in backfill methods, so that we can
have
> >> the same amount of backfill data as sierra users.
> >>
> >> Thx,
> >>
> >
> >
> >
> >
> >
> >
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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