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 ----- From: Louis Préfontaine To: [email protected] 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
