[R] extract data from Access

livia yn19832 at msn.com
Tue Jun 5 10:55:01 CEST 2007

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.
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