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Sam,
I dont think you are doing something particularly unusal. I think the
problems you described are resonable
common for me, although not to the same extent.
1. Wait for backfill doesnt always backfill. - I am guessing that AB has a
timeout function, and once expires, would
assume that no further data is available. Now if your link to Esignal server
is not good at the time. This could happen more
for those of us who are outside the US. Just have to redo it again.
2. Force backfill causing data to be lost - I notice that happen to me
sometimes, and when it does, I have to go and manually deleted the offended
data, or copy over a new symbol file from the previous clean database. and
redo it again.
I have use the following buy signal to give me know those that havent been
backfilled successfully
Buy = Now(3) - LastValue(DateNum()) > 0 OR Min(Now(4), 161200) -
LastValue(TimeNum()) > 3000;
_____
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of ss_aussie
Sent: Friday, 16 February 2007 8:31 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Any way to "Force Backfill" for a group of symbols?
Thank you Paul for your response.
Actually, I have tried dividing up my lists and scanning small lists
at a time, but they are still not backfilling every time. So each
time I run a scan for my signals I am having to go into each chart
and make sure that all bars are being assessed in my
scan/exploration. It seems that mostly the ones that don't backfill
there are 3 bars. I am finding AB will automatically backfill maybe
10% of my scan/exploration when "wait for backfill" is checked.
It seems strange as I save my database regularly too, so where does
the previously backfilled data go?
It must be something I am doing wrong as I have only seen a couple of
messages regarding this on this group. I assume those people have
resolved the issue, but did not see the resolution on here...
I would really appreciate it if anyone has any more ideas that might
help - I will try anything at this point as I cannot use it
effectively at the moment (although I will continue to try).
Thanks
Sam
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