[R] union of two data frames

[stephen sefick]

I have a thirty thousand row data frame imported from excel and a
60,000 row data frame imported from excel.  they share a common subset
of the same data and I would like to combine the two into one data
frame merged together on the data in common.  I have looked at the
help file for merge and intersect and cbind and rbind etc... And I
can't figure it out.  Thanks in advance

Stephen

-- 
Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis