[R] merge two data sets

Mark Wardle mark at wardle.org
Thu Jun 5 07:42:52 CEST 2008

Please see ?merge

In particular, see all.x parameter.


2008/6/4 kayj <kjaja27 at yahoo.com>:
> I would like to merge "data1 "that contains 100 unique ID's with  another
> data set "data 2" with 150 ID's and the age of those individuals ( the ID in
> data1 is a subset of the ID in data 2) I  would like to merge these data1
> with data2 and have the result of the merge to have the ID ordered as in
> data1.
> Can this be done in R?
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Dr. Mark Wardle
Specialist registrar, Neurology
Cardiff, UK

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