I don't use long backfills but I do have what could be a related issue. I use a symbol list that I found on IQFEED of US symbols. I have no idea how IQFEED finds these symbols but I think there are about 6300 of them. I select from that list with my formula so I generate many fewer orders. I am wondering if that number of symbols is causing a problem. If I were industrious, I could probably eliminate more than 3000 of them from consideration and end up with a much more manageable database. I think that will be my next task because, based on the responses so far, it seems that it must be something fairly unique to me.
Thanks again, MS --- In [email protected], "Tomasz Janeczko" <gro...@...> wrote: > > Hello, > > http://www.amibroker.com/video/IQFeed.html > > This video demonstrates far far more than 180 days backfill using IQFeed. > > Best regards, > Tomasz Janeczko > amibroker.com > ----- Original Message ----- > From: Keith McCombs > To: [email protected] > Sent: Friday, October 30, 2009 12:54 AM > Subject: Re: [amibroker] IQFEED AMIBROKER PROBLEMS > > > > > Are you trying to use long backfills? I don't believe anyone has been able > to get 180 day backfills to work properly. > > 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 >
