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: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of ss_aussie Sent: Friday, 16 February 2007 8:31 AM To: [email protected] 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
