Hi, I have imported an Access Database into R. There are three variables in the Access database, return, a and b. Among them a and b are factors. I would like to extract return from it, i.e return of a in level 1 and b in level 2. I would appreciate any advice. Many thanks. -- View this message in context: http://www.nabble.com/extract-data-from-Access-tf3870487.html#a10965714 Sent from the R help mailing list archive at Nabble.com.