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One thing you can do is use two computers, we all have two or more
right, and process half on each one. You will need more than one
account. One can be their simulation account. Of course if you are
trying to auto trade that won't work unless you are writing them to a
file both computers can access. That is doable.
IBs back fill is a pain in the butt and is going to drive you nuts. I
have only 60 symbols and I run into pacing errors all the time. I have
one formula that scans and plots all of them to keep my data base
current. I believe that formula has to be on the active chart. If it is
in a background chart AB will not update it. But you have to keep it
current or you will run into the pacing errors. When you scan all the
symbols you can keep your data bases up to date and avoid some of this
if you do it every day. And make sure you are only back filling one day
or you will run into pacing errors.
As soon as your system is making good money, or before you run out of
hair, switch to a real data feed that supports as many symbols as you
need and back fills without all the hassle IB gives. IBs back fill
policy is so stupid it defies description. The 100 limit will be the
beginning of your woes if you try to use IBs feed.
Another thing I ran into with IBs data feed, it is slow. I can see
changes on TWS that do not get posted on my system for a significant
delay. I have been told that a good data feed will cause AB to trade
before TWS shows the price. I believe it.
Barry
--- In amibroker@xxxxxxxxxxxxxxx, "sonyfanaticsss"
<sonyfanaticsss@xxx> wrote:
>
> Hi,
>
> I've just constructed a database with about 200+ symbols and I used
> Automatic Analysis to scan these symbols in real time and put a few of
> them in the favorite list for further analysis later.
>
> The problem is that in the mid-way Amibroker told me I have hit IB's
> 100 symbols limit. I'm aware of this limit, and I'm wondering if it is
> possible to ask Amibroker to cancel the market data subscription after
> it has scanned a symbol? (so it request data for one symbol, run the
> afl and then cancel the data subscription, then move on to the next
> symbol etc...)
>
> Thank you.
>
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