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Hello,
"Wait for backfill" does NOT mean "re-download all history".
It backfills from LAST UPDATE date till now.
To re-download everything from scratch you need to either use "Force backfill"
manually on every stock or create NEW database that is empty (export
symbols and re-import them to new database) and then run with
"wait for backfill". Since last update is null in that case, it will get all history.
Please do not forget to set the number of bars and mixed mode as shown in the video:
http://www.amibroker.com/video/IQFeed.html
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "danielwardadams" <danielwardadams@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, November 09, 2007 6:26 PM
Subject: [amibroker] Re: Google web accelerator case - don't install "accelerators".
>I just found this older message about IQFeed backfill problems caused
> by web accelerators and toolbars.
>
> I've been having problems too but I don't (to my knowledge)have any
> accelerators or toolbars running. Question: Is there a list of the
> software that can cause problems?
>
> My problem is that I'm trying to backfill the maximum amount of 1
> minute data. It's my understanding this is supposed to be 12 months
> worth of data from IQFeed. My problem is I get the maximum amount of
> data if I do "Force Backfill" on an individual stock basis but I still
> don't necessarily get the entire 12 months. Rather, I sometimes get
> about 8 months (which today takes me back to Feb. 21, 2007), other
> times I do get 12 months (Nov. 15, 2006 in today's case) but other
> times I only get 2-3 months worth of data.
>
> So that's one problem.
>
> Another problem is if I check "Wait for backfill" in Automatic
> analysis and do a scan or backfill, the amount of data I get seems
> almost indeterminete, ranging from a few hundred bars all the way up
> to the full 12 months worth.
>
> I am running the latest version of the IQFeed plugin (dated October
> 26, 2007). Running Windows XP Pro.
>
> Any ideas?
>
> Dan
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, ftonetti@xxx wrote:
>>
>> The same can be said for a variety of Web oriented "toolbars" ...
>>
>> ----- Original Message -----
>> From: Tomasz Janeczko
>> Date: Wednesday, September 12, 2007 2:17 pm
>> Subject: [amibroker] Google web accelerator case - don't install
> "accelerators".
>> To: amibroker@xxxxxxxxxxxxxxx
>>
>> > Hello,
>> >
>> > We have just received an e-mail from one of our customers who
>> > had problems with IQFeed backfill.
>> > As it turned out, the reason for problems was Google web
>> > accelerator installed on this machine.
>> > Once he uninstalled Google Web accelerator backfills started to
>> > work fine again.
>> >
>> > This is yet another example of general rule that you should
>> > apply to your computer setup:
>> >
>> > Do NOT install ANY "memory booster" , "performance enhancer",
>> > "turbo", "accelerator" softwares from ANY vendor.
>> > I can not stress it more.
>> > They do not accelerate anything. They just consume CPU cycles
>> > and memory and (what is the worst)
>> > can seriously interfere with proper operation of Windows.
>> >
>> > Best regards,
>> > Tomasz Janeczko
>> > amibroker.com
>> >
>> >
>> > Please note that this group is for discussion between users only.
>> >
>> > To get support from AmiBroker please send an e-mail directly to
>> > SUPPORT {at} amibroker.com
>> >
>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> > http://www.amibroker.com/devlog/
>> >
>> > For other support material please check also:
>> > http://www.amibroker.com/support.html
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>> >
>>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
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