Update CSI data without overwriting files?

Discussions about the testing and simulation of mechanical trading systems using historical data and other methods. Trading Blox Customers should post Trading Blox specific questions in the Customer Support forum.
Post Reply
LeviF
Roundtable Knight
Roundtable Knight
Posts: 1428
Joined: Mon Dec 22, 2003 12:24 pm
Location: Des Moines, IA
Contact:

Update CSI data without overwriting files?

Post by LeviF » Sat Jun 14, 2008 9:45 am

I accidentally overwrote my old files which have more than 10 yrs of data. My CSI subscription is only for 10 yrs of data. I have some backup files that havent been updated for a few months. How can I get UA to fill in the gaps without overwriting the files again? I run a re-download and all I get is yesterdays updates. I know if I run a complete download it will overwrite all my old files again.

Tim Arnold
Site Admin
Site Admin
Posts: 8540
Joined: Tue Apr 06, 2004 1:41 pm
Location: Boston, MA
Contact:

Post by Tim Arnold » Sat Jun 14, 2008 4:48 pm

Sounds like a question for CSI.

My answer would be "can't be done"

LeviF
Roundtable Knight
Roundtable Knight
Posts: 1428
Joined: Mon Dec 22, 2003 12:24 pm
Location: Des Moines, IA
Contact:

Post by LeviF » Sat Jun 14, 2008 5:10 pm

i didnt figure i could. i just spent the last 4 hours going through each file and appending the correct data.

stamo
Roundtable Knight
Roundtable Knight
Posts: 522
Joined: Tue Mar 13, 2007 5:27 pm

Post by stamo » Sat Jun 14, 2008 8:34 pm

i understand that this doesn't help now, but ...

i took up sluggo's suggestion and as part of my daily update, i make a zip file of all the new data and save it with the current date as part of the name.

even if i only did this once a month, i'd have my back data.

also helps debug when splits happen.

Post Reply