|
PureBytes Links
Trading Reference Links
|
Hello,
This is not the problem of "force backfill" but the limit of data provided by the DATA VENDOR, i.e. eSignal.
1. eSignal provides only maximum of 120 CALENDAR DAYS (not trading days) of data.
120 CALENDAR days means roughly 4 months. Now is beginning on November and
you can only expect getting 4 months back, ie: October, September, August, July.
I checked and can see that eSignal is increasing their retention and actually I can backfill
as far as back to May 24, 2004. (that's half a year). But officially retention is only 120 calendar days (4 months)
2. You should NOT change "base time interval". It should be set ONCE at database
creation time. Otherwise, after the change, you would need to force backfill for each and every stock
you have in your DB.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "aereoplain" <aereoplain@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, November 12, 2004 1:50 AM
Subject: [amibroker] "Force Backfill" function is not filling in missing data
>
>
> Hello,
>
> I use eSignal real-time for my datafeed. My database settings are
> hourly, and it's supposed to load 5000 bars (about 2 years worth of
> data). Several stocks in my database are now missing a few days'
> data from May 2004, but when I right-click the green "OK" button at
> the bottom right corner, and then click "Force Backfill," it does
> not fill in the missing data. Also, at least one stock (GE) now
> only has data going back to April 2004. The Force Backfill function
> does not add this missing data either (again, it's set to go back 2
> years).
>
> Does anyone have any suggestions on how to fill in the missing
> data? I should point out that the data went missing after I briefly
> tried to change my database settings to 15 minutes instead of
> hourly. When I noticed problems with my composite charts
> immediately after changing the settings, I switched back to hourly.
> Unfortunately, the problems didn't go away after switching back.
>
> Thanks,
> Jason
>
>
>
>
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
------------------------ Yahoo! Groups Sponsor --------------------~-->
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/GHeqlB/TM
--------------------------------------------------------------------~->
Check AmiBroker web page at:
http://www.amibroker.com/
Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|