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I don't want to go into too much detail but I think one of the key
points I was trying to make is that since AB does not allow the
combining of intraday and EOD data into a single unique dtabase, the
natural workaround is to have two unique, ***SEPARATE*** databases
available -- one EOD and one intraday. These are then accessed by
opening two different instances of AB at the same time.
The IQFeed.DLL plugin does not allow the use of two unique, SEPARATE
databases within AB at the same time. This is probably a bug in the
DLL, and not a bug in AB.
As far as product marketing goes, the development of a bug-free
IQFeed.DLL should be the collaborative effort of both AB and IQFeed
developers, together. Both products have to gain by doing this. So
it is beyond me why such limited support exists for certain, low-
cost datafeeds. From the AB angle, you would think they would be hot
on it and realize this spells **free easy money** when they go out
of their way to support the cheapest (and still reliable) data feeds
for their product.
I guess that's why I get paid so much damn money for doing the
marketing that I do. I might just take it for granted because I've
been doing it so long.
Thanks everyone for your posts. I am off to research other data
feeds now.
If you recommend I research something in particular, now is a good
time to let me know about it. Frankly, I'm not too thrilled about
paying $100 or $150 to eSignal for a database IQFeed supplies for
$50. All because of a DLL file. It would be cheaper for me to hire a
developer to fix the damn DLL file on my own than to pay eSignal
that much money over a long period of time.
Thanks again,
Brian
--- In amibroker@xxxxxxxxxxxxxxx, "global_investor"
<independent_opinion@xxxx> wrote:
> --- In amibroker@xxxxxxxxxxxxxxx, "Brian R." <brian@xxxx> wrote:
> > Hi Ed,
> >
> > I did some testing of IQFeed used with AmiBroker (AB).
> >
> > 1) You cannot create more than one unique database in AB as long
as
> > the database accesses IQFeed. This means you have to choose
between
> > a unique EOD database, or a unique intraday database, but not
both
> > (and I am not suggesting combining these two databases into a
single
> > database, here).
>
> It's a little bit difficult to understand what you exactly mean
here.
>
> One of Amibroker's strengths actually is the ability to run
multiple
> AB instances simultaneously, while different AB instances could
access
> different databases.
>
>
> > 2) I tried using a free Lycos EOD feed to use with a unique EOD
> > database in AB, but as long as I have created a unique intraday
> > database in AB setup to use IQFeed, I cannot access the Lycos
feed
> > for EOD data. It may work the first time, but if you shut down
and
> > try it again, it will not work the second time.
> >
>
> > 3) IQFeed is limited to 35,000 1-minute bars (24 days) or 1,000
> > daily bars (choose one of these, or choose hourly, 15-minute,
> > weekly, etc.). The 24 days worth of 1-minute data makes it
difficult
> > to use 200-day or 50-day MAs (not enough data). Since you cannot
use
> > an EOD database alongside an intraday database, you essentially
> > cannot do any reasonable EOD indicator analysis if you already
have
> > created a unique intraday database. In essence, the best
approach
> > seems to be to use 1-hour or 15-minute data, although that may
be
> > too confining as well.
>
>
> it would indeed be an interesting feature to combine an intraday
> database with an EoD (timeframe daily) database. For example, to
> calculate indicators based on daily data (for which long histories
are
> available) and then display these indicators in an intraday chart,
or
> use them in a trading system with intraday data.
>
> But this would require a redesign of certain parts of the Amibroker
> architecture, I suppose.
>
> >
> > 4) I created a unique AB EOD database with IQFeed, using 200
> > symbols. I created another AB intraday database with IQFeed,
using
> > 300 different symbols (200 + 300 = 500 max symbols in IQFeed).
Since
> > IQFeed does not allow multiple databases, the test failed.
>
> I don't fully understand your point here. As far as the problem
you
> described in one of your previous posts is concerned (Open & Low =
0,
> when base interval of IQFeed database is daily), it obviously
appears
> to be a bug in Amibroker's IQFeed plugin, and NOT a problem IQFeed
is
> responsible for.
>
> >
> > All of this left me with a bad taste in my mouth. First off, I
can't
> > believe none of this has been previously documented, anywhere,
by
> > the IQFeed service.
>
> Well, I sent a bug report regarding the EoD problem to TJ already a
> couple of weeks ago. So we can only hope that TJ fixes the bug in
the
> IQFeed plugin.
>
> > In addition, IQFeed's DLL files have a tendency
> > to corrupt AB when you test certain data scenarios. This means
> > repeatedly uninstalling, and then reinstalling AB and related
> > components, in order just to test the limitations of IQFeed.
>
> cannot confirm this.
>
> > Nevermind losing all of your custom charts and layouts in the
> > process, since a full AB reinstall (i.e., a complete deletion of
the
> > previous install) won't understand your backup chart and layout
> > files for whatever reason (someone smoking too much crack?).
> >
> > I feel IQFeed is probably a good deal for the money, but without
> > proper documentation the service is a complete and absolute
waste of
> > time. If everyone has to go through what I just went through to
> > understand the real limitations of the service when it's used
with
> > AB, there are going to be a lot of ticked off IQFeed customers.
>
> one of IQFeed's biggest weaknesses, in my opinion, is the data
quality
> issue, given that the intraday (backfill) data is unfiltered and
> contains many bad ticks. I opened a thread on this topic at
> Elitetrader.com some time ago:
> http://www.elitetrader.com/vb/showthread.php?s=&threadid=29282
>
> While I know that many IQFeed users fully agree with me and would
like
> to see improvements (e.g. implementation of optional filters),
most
> users are unfortunately passive and don't voice their opinions.
>
> It would clearly be helpful if more users (both IQFeed customers
and
> prospects) express their interest in the improvement of IQFeed's
bad
> tick problem. A simple one-liner, e.g. "I'd like to see the
> implementation of optional filters, too" would help.
>
> The more users demonstrate their interest, the higher priority this
> topic is assigned by IQFeed/DTN.
>
> Unfortunately, I'm not based in the U.S., but instead in a non-
English
> speaking European country, so the easiest thing for me is to open a
> thread on this topic, ie. communicate in writing. It would be far
> more difficult for me to call IQFeed or the developers by telephone
> and propose possible solutions or persuade them to assign a higher
> priority to the bad tick problem.
>
> > Spending the $100 or $150 a month for eSignal (500 symbols) is
> > probably entirely worth it, based on what I am finding with
IQFeed.
> >
>
> Well, I think that eSignal would not solve all your problems
either.
> For example, combination of intraday data with longer histories of
> daily data wouldn't be possible either, unless the Amibroker
> architecture gets changed/redesigned.
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