On Aug 19, 2012, at 5:56 PM, Sapana Lohani wrote:
Hi,
My data.frame "A" has FID like this
FID
a
a
b
b
b
c
c
d
d
d
d
Now my second data.frame "B" has age value for a, b, c, d like
FID Age
a 5
b 7
c 9
d 3
How can search for the Age column in "B" and replace the values in
"A" so that my new "A" looks like this
? merge
Perhaps
merge(A, B)
# although the ambiguities inherent in posting only screen output
instead of the greatly-to-be-preferred output of dput() makes this a
guess.
FID Age
a 5
a 5
b 7
b 7
b 7
c 9
c 9
d 3
d 3
d 3
d 3
Thanks you
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