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Hello,
Before you buy QCollector, you need to understand that
both AmiBroker and QCollector
use the same *IQFEED API* and the same
servers.
That means that you won't get ANY better backfills that you
get with AmiBroker because it is the IQFEED API that handles
backfill.
The client application (AB or QC) just sends REQUEST and WAITS
for data to arrive. No magic here. Then data arrive as text via
socket.
The speed is totally limited by the API and IQFeed server
response time.
It can be easily seen when using IQFeed own History demo that
just downloads historical data and displays in the list box.
The time since request to first response is well
above 1 second and transfer speed is *exactly* the same as you
would
see in AmiBroker. You will see the same using
QCollector.
As to your question - there is no problem you can have 4
folders, 2000 securities in each and AmiBroker can access
all folders simultaneously, but you need to understand that no
matter what you do, you won't get 8000 symbols updated in real time from
IQFeed.
Streaming via IQFeed (regular account) is for 500
symbols.
It will take more than 8000 seconds (2+ hours) to backfill
8000 symbols. And that does not depend on program you are using for
IQFeed.
Generally speaking internet-based streaming RT sources are not
designed to track 8000 symbols at once.
You would need dedicated pipe or satellite dish for that
many.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
Sent: Thursday, June 19, 2008 8:00
PM
Subject: [amibroker] Metastock and
Amibroker
Hi,
I am considering buying Qcollector for IQFeed, but
it saves the data in Metastock files. Metastock can only have 2000
securities per file, so I was wondering if there would be any problem for a
large 1-minute databse with 8000 securities in Amibroker. Would that be
easy to manage?
Thanks.
Louis
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