Hello all,
I am fairly new to R and am trying to bring together data from multiple
sources. Here is one problem that I cannot seem to crack I hope somebody can
help. Let me simplify the problem: Lets say I have two datasets: DATA1 and
DATA2. I would like to work with all the cases in DATA2. I have additional
variables on these cases in DATA1, which is a larger data set with many
additional cases. I know how to merge data sets if the datasets contain the
same cases. However, I want to eliminate all the cases from DATA1 that are not
present in DATA2 and then merge. The CASEID is my matching variable, and there
are no duplicate variable names.
Any guidance would be greatly appreciated.
Thanks in advance,
Brian
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