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)




"Version 4.0.0.2 has been working well for me and I appreciate that it is now a much tighter client to work with. I feel I can go to press with my own application and rely on a stable platform" - Comment from David in IA.
"DTN feed was the only feed that consistently matched Bloomberg feed for BID/ASK data verification work these past years......DTN feed is a must for my supply & demand based trading using Cumulative Delta" - Comment from Public Forum Post
"I am keeping IQFeed, much better reliabilty than *******. I may refer a few other people in the office to switch as well." - Comment from Don
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"Just a thank you for the very helpful and prompt assistance and services. You provided me with noticeably superior service in my setup compared to a couple of other options I had looked at." - Comment from John
"If you want customer service that answers the phone, your best bet is IQFeed. I cannot stop praising them or their technical support. They are always there for you, and they are quick. I have used ****** too but the best value is IQFeed." - Comment from Public Forum
"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
"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
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
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 »Clarification concerning historical data from 148 farm?
Author Topic: Clarification concerning historical data from 148 farm? (4 messages, Page 1 of 1)

taa_dtn
-DTN Evangelist-
Posts: 154
Joined: May 7, 2004


Posted: Jul 10, 2007 02:32 PM          Msg. 1 of 4
The developer notice I just received states:
Quote: Due to some of the problems on Monday, the tick data with second resolution may have some corruption. Thus, we have chosen to disable historical intraday data from the new servers. If you are connected to a x.x.148.x server farm, you will receive second resolution in the streaming feed, but historical tick data will only be time stamped to the nearest minute.

This is a little confusing to me, because it appears to say that intraday historical data is "disabled" (which I would interpret as "no data will be returned"), but that data will be returned anyway, just without second resolution.

If we happen to be connected to the 148 farm, and make an intraday historical data request, will we receive valid data without second resolution? Or will we not receive any data at all? Is there any case in which we might receive corrupted data?

Thanks!
Allen

DTN_Steve_S
-DTN Guru-
Posts: 2093
Joined: Nov 21, 2005


Posted: Jul 10, 2007 02:37 PM          Msg. 2 of 4
There should not be any case where you will receive corrupted data.

The 148 server farm will be getting it's history data from the 156 server farm instead of building the data itself. This will result in not having seconds resolution in history (even though it will continue to be in the streaming quotes data).

I hope this helps clear up the confusion.

andrejk
-Interested User-
Posts: 8
Joined: May 7, 2007


Posted: Jul 10, 2007 02:41 PM          Msg. 3 of 4
Hi,

there seems to be a problem with historical end-of-day data for options as well.

Using the LookupClient and issuing

Symbol: GM GU
Days: 3

yields to:

2007-07-06 15:32:07,0.75,0.45,0.55,0.55,166,0
2007-07-02 15:32:07,1.55,1.15,1.45,1.45,20,0
2007-06-29 15:32:07,1.80,1.20,1.55,1.35,394,0

The result set seems to be shifted one day backwards - whereas a lookup of the underlying stock provides the correct data set:

Symbol: GM
Days: 3

yields

2007-07-09 15:30:14,37.56,36.60,36.60,36.77,15267818,0
2007-07-06 15:30:14,36.89,36.30,36.64,36.49,9091800,0
2007-07-05 15:30:14,36.81,35.98,36.12,36.76,17818338,0

DTN_Steve_S
-DTN Guru-
Posts: 2093
Joined: Nov 21, 2005


Posted: Jul 10, 2007 02:49 PM          Msg. 4 of 4
I also see this. I will have our server team look into this...
 

 

Time: Tue May 14, 2024 11:37 AM CFBB v1.2.0 14 ms.
© AderSoftware 2002-2003