|
PureBytes Links
Trading Reference Links
|
Ah...the days of managing your own data. I recall them...
Alternately, you could use TradeStation 7 and spend your time trading rather than managing data...
You just type in a symbol and a chart full of data magically appears...
Bob Fulks
At 06:56 PM 2/29/2004, jbclem1 wrote:
>John,
>
>Glad you asked, I have a few opinions about DTNIQfeed and Dynastore. First,
>IQFeed is unfiltered. I don't know why I seem to get more bad ticks than
>others, but I spend a LOT of time correcting them. Dynastore has a tick
>filter but it doesn't work very well for me. One really annoying feature is
>when you get a bad tick on a daily bar, correct it, and then it comes right
>back...the bad tick that is. I've learned it's a waste of time to try to
>correct a daily bar bad tick during market hours. Therefore you lose the
>use of that daily chart unless you want to reset the scale manually and
>ignore the current bar.
>
>The data feed itself is as fast as any I've compared it with (Interactive
>Brokers, Q.com Live Charts).
>
>Historical data download thingy...first, it's limited to 5 days of tick
>data, no matter what the ads say. DTN says they have 8 days of tick data
>but they are counting the weekend, and somehow 8 less 2 weekend days equals
>5 days, the most I've ever received. The Dynastore history downloader will
>only access the tick data and daily data. DTN supplies 120 days of minute
>data but for that you need the Dynastore Dynaloader for IQFeed. But
>unfortunately that's still a work in progress.
>
>I also have a mysterious data shutoff problem, 2-10 times a day somedays,
>that no one can figure out. I can't say it's the fault of the data feed or
>Dynastore. I've reinstalled TS2000i several times and tried many fixes
>without success. But I can say that since I've been trying OnDemand
>Server(from RT Soft) I haven't seen the problem.
>
>OnDemand Server accesses the DTN IQFeed data and works ok with these
>qualifications: It is sometimes slow to bring up a chart and I couldn't use
>it with my dialup connection because it took 1/2 hour just to bring up 10
>workspaces. Even now with a 2000 kbps broadband it will sometimes take an
>annoyingly long time to open a chart...that may be a broadband problem I
>don't know about yet. Normal is 15-20 seconds per chart on my PIII 1000mHz
>computer. This points to the real problem with OnDemand Server, it doesn't
>save to the hard drive which is one reason it takes so long to open each
>chart. That makes you dependent on your internet connection if you want to
>use TS2000i. No more offline looking at charts. No stock
>screening/scanning. No quick skimming through stock charts in your symbol
>list. Also, you can't edit and fix the bad ticks so you are stuck with them
>until DTN starts filtering their data feed.
>
>Back to the Dynastore history downloader thingy...I'm trying to use it after
>hours to keep my hard drive data base up to date but I have another problem
>with it that no one can solve. It downloads once then gets stuck for hours
>on the second download. That's made it useless during market hours which is
>why I am trying OnDemand Server. It also has no way to sort your symbols so
>if you are trying to find a particular symbol to download, or trying to
>remove duplicates...you will spend a lot of unnecessary time scrolling back
>and forth through your symbol list looking for the symbol(I only have 150
>symbols and it's a royal pain, imagine if you have 500 symbols!). You need
>to remove duplicates because for no apparent reason a few symbols on the
>symbol list will go blank (lose part of their text) and sometimes also stop
>collecting. When you notice this you add the symbol(s) again to get it to
>start collecting. After a while you have lots of duplicates.
>
>The history downloader has one nice feature, it lets you download all the
>symbols (for intraday data) at once. Either one symbol or all, you can't
>pick 5 or 10 and do the same. The all at once feature won't work with daily
>data if you have any futures or index symbols in your symbol list. BTW, the
>downloader doesn't automatically download into the Global Server. It puts
>the data into a folder and then you manually import it into the Global
>Server.
>
>You have to appreciate the fact that Dynastore (and it's rival Metaserver)
>allow us to use TS2000i/TS4 with other datafeeds. DTN is reasonably priced
>compared to some. I've had a lot of problems with the Dynastore/IQFeed
>combination but some people don't have any. It's worth trying it out and I
>hope I've given you a few things to watch out for.
>
>John
|