Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)




"After all the anxiety I had with my previous data provider it is a relief not to have to worry about data speed and integrity." - Comment from Eamonn
"Everything is working great ! Very impressive client. The news refreshes better and is more pertinent than the ******* feed I paid $ 100/month for. I Also like the charts a lot." - Comment from Leon
"I've never had DTN go out on me since switching. ******* would go down a couple times every month when I was using them." - Comment from Bryce in AL.
"And by the way, have to say this. I love the IQFeed software. It's rock solid and it has a really nice API." - Comment from Thomas via RT Chat
"If you are serious about your trading I would not rely on IB data for serious daytrading. Took me a while to justify the cost of IQ Feed and in the end, it's just a 2 point stop on ES. Better safe than sorry" - Comment from Public Forum
"I'm very glad I switched to IQFeed. It's working perfectly with no lag, even during fast market conditions." - Comment from Andy via Email
"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam
"I'm satisfied with IQFeed. It's the most reliable and fastest quote feed I have ever used. Although I'm a resident in China, it's still very fast!" - Comment from Xiaofei
"I was with ******* for 4 years at $230 a month, this is a huge savings for me, GOD BLESS YOU PEOPLE," - Comment from T.S. via Email
"I just wanted to let you know how fast and easy I found it to integrate IQFeed into our existing Java code using your JNI client. In my experience, such things almost never go so smoothly - great job!" - Comment from Nate
Home  Search  Register  Login  Recent Posts

Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTNMarkets on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »Question about Price Stream Data Structure
Author Topic: Question about Price Stream Data Structure (3 messages, Page 1 of 1)

enflow
-Interested User-
Posts: 2
Joined: Sep 13, 2004


Posted: Sep 13, 2004 08:57 AM          Msg. 1 of 3
Interested in signing up for your API developer feed...

have question about the data structure string supplied in your feed

We need this data structure info for each ascii string received

symbol, timestamp, price, size(volume), bid, ask & trade only (no quotes - just trades) or flag something to filter the trades from the quotes

definitely NEED bid price / ask price on SAME line as last price or something showing trade was a buy or sell...

cj

DTN_Jay_Froscheiser
-VP, Product Operations-
Posts: 1746
Joined: May 3, 2004

DTN IQFeed/DTN.IQ/DTN NxCore


Posted: Sep 13, 2004 02:03 PM          Msg. 2 of 3
If I understand your question correctly, yes, we offer everything you need. You can differentiate trades from quotes. While obviously every trade is both a buy and a sell, we do show the bid or ask price at the time of the trade so you can see if the trade occurred at the bid or as (or somewhere inbetween or outside).

Jay Froscheiser
DTN Market Access, LLC.

enflow
-Interested User-
Posts: 2
Joined: Sep 13, 2004


Posted: Sep 13, 2004 03:34 PM          Msg. 3 of 3
Hi Jay,

yes, exactly, we would just compare the trade price against the bid ask values within the same string to see if the trade went off at the Bid or Ask and that would so flag the trade fo us as a buy or sell.

followup Question 1)
also from what i saw - the way for us to know it is a TRADE insead of a QUOTE is the number 18 data stream field on the data strucutre page - right...

followup Question 2)
(HH:MMc) with the little c being replaced with a t for trades so we know to keep that string as a trade and anything else is a bid quote or ask quote update... right???

I agree, every trade is both a buy and a sell but this tells us who initiated the trade who was the aggressor in the trade -

thanks...

cj
 

 

Time: Thu May 16, 2024 2:05 AM CFBB v1.2.0 10 ms.
© AderSoftware 2002-2003