[R] combining two data frames (different question)

From: calundergrad <haibinglin_at_berkeley.edu>
Date: Tue, 17 Jun 2008 15:40:46 -0700 (PDT)

i have two data frames. One data frame contains one column with the identificication number of a geographic place. The other columns are just some data about the corresponding geographic place. The other data frame also contains one column with the id number of a geographic place. the other columns of the second data frame is other data about the corresponding geographic place.

I want to make one data frame which has the id numbers and the corresponding data from both the first and second data frames.

how do you do this?

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