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)




"I started a trial a few weeks back before the market went wild. DTN.IQ didn’t miss anything and beat my other provider. I decided to stay with you because of the great service through all the volatility." - Comment from Mike
"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
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"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
"Thanks for the great product and support. During this week of high volume trading, my QuoteTracker + IQ Feed setup never missed a beat. Also, thanks for your swiftness in responding to data issues. I was on ******* for a few years before I made the switch over early this year, and wish I had done it a long time ago." - Comment from Ken
"Previously I was using *******. IQFeed is WAY more economical, and for my charting needs is just as good, if not better." - Comment from Public Forum Post
"Thank God for your Data Feed as the only Zippers I see are on my pants (LOL), and no more 200 pip spikes to mess up charts." - Comment from Spiro via Email
"IQFeed version 4 is a real screamer compared to anything else I have seen." - Comment from Tom
"Thank you so much - awesome feed, awesome service!" - Comment from Greg via Email
"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
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 »Dynamic field set
Author Topic: Dynamic field set (2 messages, Page 1 of 1)

bgpl
-Interested User-
Posts: 1
Joined: Dec 21, 2010


Posted: Dec 21, 2010 02:01 AM          Msg. 1 of 2
Basic question regarding dynamic fieldsets:

if i request data for a few fields using the dynamic field capability, will i get update messages containing ONLY those fields ? Or will I get update messages with ALL fields, but only when changes in my requested fields occur ?

thanks !

DTN Brian Wood
-Interested User-
Posts: 17
Joined: Jun 2, 2004


Posted: Dec 21, 2010 02:32 PM          Msg. 2 of 2
For fieldsets, you will receive an update message any time one of the selected fields are directly updated or anytime one of the fields that a selected field depends upon is updated. For example: if you are watching the Change field and the Last price is updated (causing the Change field to be updated), you will still receive an update message. Additionally, "updated" in this paragraph does not mean that the value changed but rather simply that it has been received. This means that you can possibly receive messages that are exactly the same as the previous message received for a symbol. Exceptions to this rule are identified as follows: Decimal Precision - Updates to this field will only result in an update sent to your app if it changes. Tick - Updates to this field only triggers a new update message on trades.

Visit our new online forums! DTN employees actively monitor the forums to provide you the highest level of support in the industry. Our forums also has an announcements area where you can learn about new features or changes within DTN. You can even use the forums to exchange trading ideas or tips and tricks on how you use your DTN data to be more profitable.

Go to http://forums.dtniq.com now to start sharing information with fellow DTN subscribers!
 

 

Time: Mon April 29, 2024 2:52 PM CFBB v1.2.0 10 ms.
© AderSoftware 2002-2003