Yeah, but to be fair to IQ feed, they simply pass on the data from the providers... if the providers pass on corrupted data, that's what you get...
I don't think it a case that IQ are messing up the data. However, I am one of those who think IQ feed should be doing some sensible parity checking on their data before they pass it on. --- In [email protected], "Edward Pottasch" <empotta...@...> wrote: > > I think these Nymex data are free, at least historical data are. I actually > only use IQFeed to backtest my systems. It is like an expensive way to get > intraday historical data. I use IB data to trade. These bad ticks I have also > mainly in stocks. Futures data look quite clean, > > rgds, Ed > > > > > ----- Original Message ----- > From: Rob > To: [email protected] > Sent: Friday, October 30, 2009 11:43 AM > Subject: [amibroker] Re: IQFEED AMIBROKER PROBLEMS > > > I don't have Nymex access... > > But I have regular bad tick problems with IQ feed because they don't do any > parity checking of data. They refuse to because they say it slows things > down... but it's very annoying when you get a bad tick & then have to report > it re-backfill to get it right. > > --- In [email protected], "Edward Pottasch" <empottasch@> wrote: > > > > hi Rob, > > > > no all the data before 2:29 P.M., including volume data seems to be > crammed in 1 bar. If you backfill again then it does not happen. If you ask > IQfeed they always see the problem and have to ask someone else (I believe > their data supplier) to fix the problem. And this happens again and again and > again. Wonder if eSignal has the same issues. It is about +CL#. Have a look. > All data on 10/29/09 before 2:29 P.M. is crammed into 1 bar, > > > > regads, Ed > > > > > > > > > > > > ----- Original Message ----- > > From: Rob > > To: [email protected] > > Sent: Friday, October 30, 2009 11:26 AM > > Subject: [amibroker] Re: IQFEED AMIBROKER PROBLEMS > > > > > > What's the issue Ed...? Bad tick...? > > > > --- In [email protected], "Edward Pottasch" <empottasch@> wrote: > > > > > > a different matter but does anyone have these problems with the oil > data +CL# ? Look at yesterdays data. This happens every week or every other > week. I have to contact IQFeed every time for them to I believe contact the > data supplier to correct this. I am not sure why this is but it is pretty > annoying. Does eSignal have the same issue with yesterdays data? > > > > > > see chart, regards, Ed > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > From: Rob > > > To: [email protected] > > > Sent: Friday, October 30, 2009 9:36 AM > > > Subject: [amibroker] Re: IQFEED AMIBROKER PROBLEMS > > > > > > > > > Can you specify how many bars you have in your DB...? What is the base > time frame...? How many symbols are you streaming...? > > > > > > --- In [email protected], "trfy1120" <trfy1120@> wrote: > > > > > > > > > > > > I just installed version 4.4.0.3 of the iqfeed client over the newer > version that I was using (4.6.1.0). Now I get a prompt to install the newer > version every time I load an IQFEED database but, after trying to duplicate > my problem 4 or 5 times, I have been unable to do so. The data seem to be ok > now. > > > > > > > > I am going to test some more tomorrow and, if the older program does, > in fact, resolve the problem, I will probably call IQFEED tomorrow. > > > > > > > > MS > > > > > > > > --- In [email protected], "trfy1120" <trfy1120@> wrote: > > > > > > > > > > Is anyone else having problems with IQFEED and Amibroker? In my > case, I have had trouble with duplicate data. That is, for example, my > database will have data for 10/29 preceded by data from 10/28 and then more > data for 10/29. You can only see this when you look at the quote editor. It > don't think it shows up in the charts but it does affect formula computations > referring to previous bars. > > > > > > > > > > Today, my system is dropping data that were previously in the > database. > > > > > > > > > > I think I am following the video database tutorial and I have > contacted support without much luck. Does anyone else have any idea what may > be going on? > > > > > > > > > > By the way, I use IQFEED to feed other programs so I don't think it > is an IQFEED problem. > > > > > > > > > > Thank you, > > > > > > > > > > MS > > > > > > > > > > > > > > >
