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)




"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
"You are either overstaffed or people just don't have problems with your feed because customer support always answers the phone quickly." - Comment from Jay via Email
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"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
"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.
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"Its working FABULOUSLY for me!! Holy cow...there has been so much I've been missing lately, and with this feed and Linnsoft software...I'm in the game now." - Comment from Chris R.
"I am a hedge fund manager here. It’s funny, I have a Bloomberg terminal and a Bridge feed, but I still like having my DTN feed!" - Comment from Feras
"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.
"You have an excellent product !!!!!!" - Comment from Arely
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 »NEW IQFEED FORUMS »IQFeed API Questions »Only send updates for dynamic fields subscribed
Author Topic: Only send updates for dynamic fields subscribed (2 messages, Page 1 of 1)

mac
-Interested User-
Posts: 25
Joined: Apr 6, 2017


Posted: May 8, 2023 02:18 PM          Msg. 1 of 2
If I set,

S,SELECT UPDATE FIELDS,Bid,Ask,Message Contents

and w@ESM23

Q,@ESM23,4152.75,4153.00,b,
Q,@ESM23,4152.50,4153.00,b,
Q,@ESM23,4152.50,4152.75,a,
Q,@ESM23,4152.50,4153.00,a,
Q,@ESM23,4152.75,4153.00,b,
Q,@ESM23,4152.50,4153.00,b,
Q,@ESM23,4152.75,4153.00,b,
Q,@ESM23,4152.50,4153.00,b,
Q,@ESM23,4152.75,4153.00,b,
Q,@ESM23,4152.50,4153.00,b,

I see only bid or ask price updates. However, when watching equities, I get mostly duplicate data. These are updates to Size and Market Data Center which are not part of my update fields. Is it possible to filter out these updates in iqconnect so I don't need to process duplicate data. It makes sense to get updates if market data center updates but not size if I'm not interested in this field.

wAAPL

Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,
Q,AAPL,173.5900,173.6000,ba,



MAC
Edited by mac on May 8, 2023 at 03:40 PM
Edited by mac on May 8, 2023 at 03:41 PM

DTN_Gary_Stephen
-DTN Guru-
Posts: 396
Joined: Jul 3, 2019


Posted: May 8, 2023 04:37 PM          Msg. 2 of 2
For equities, the quote is updated every time an update happens, not just when values change. There is currently no way to filter out non-price change updates via API commands.

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist
 

 

Time: Wed May 1, 2024 11:08 AM CFBB v1.2.0 15 ms.
© AderSoftware 2002-2003