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
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"With HUGE volume on AAPL and RIMM for 2 days, everyone in a trading room was whining about freezes, crashes and lag with *******, RealTick, TS and Cyber. InvestorRT with IQFeed was rock solid. I mean SOLID!" - Comment from Public IRC Chat
"Very impressed with the quality of your feed - ******* is a real donkey in comparison." - Comment from A.C. via Email
"I would just like to say that IQFeed version 4 is running very well and I am very happy with its performance. I would also like to extend a big thanks for the fast and efficient help that I always receive. My questions and concerns are always addressed promptly. Way to go!" - Comment from Josh in CO.
"As a past ******* customer(and not a happy one), IQ Feed by DTN is a much better and cheaper product with great customer support. I have had no problems at all since switching over." - Comment from Public Forum
"IQ feed is brilliant. The support is mind-bending. What service!" - Comment from Public Forum Post
"Boy, probably spent a thousand hours trying to get ******* API to work right. And now two hours to have something running with IQFeed. Hmmm, guess I was pretty stupid to fight rather than switch all this time. And have gotten more customer service from you guys already than total from them… in five years." - Comment from Jim
"Thanks for following up with me. You guys do a great job in tech support." - Comment from Phelps
"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email
Home  Search  Register  Login  Blogs Recent Posts

Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTN_IQFeed on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
Viewing User Profile for: fabiodev
About Contact
Joined: Jun 12, 2018 08:47 AM
Last Post: Jun 12, 2018 09:22 AM
Last Visit: Jun 13, 2018 03:12 AM
Website:  
Location: Italy
Occupation:
Interests: Trading
Email: andreaferrante1986@gmail.com
AIM:
ICQ:
MSN IM:
Yahoo IM:
Post Statistics
fabiodev has contributed to 1 posts out of 18704 total posts (0.01%) in 99 days (0.01 posts per day).

20 Most recent posts:
IQFeed Developer Support » Possible error in HTX functions series Jun 12, 2018 09:22 AM (Total replies: 1)

Hello,
I have IQFeed API licence and I am seeing this issue in your tick by tick data: cumulative volume and total volume (as released purely by your application) are not the same.
Let me explain myself better: by getting historical future contract tick by tick data using IQFeed API designed function (i.e. HTX,[Symbol],[MaxDatapoints],[DataDirection],[RequestID],[DatapointsPerSend]<CR><LF>) progessive summation of last size tick is not equal in many case to the value you provide inside Total Volume column, why ?

Please, find attached ES futire contract tick by tick data so that you can replicate the issue: the issue is into the "DELTA" column when the value in it is different from zero !!!

Thank you for reading and let me know please
Andrea

Fabio


Time: Tue September 18, 2018 10:47 PM CFBB v1.2.0 15 ms.
© AderSoftware 2002-2003