Hello,
i want to match a column of one data.frame to another, my problem is, that i
only want to match the data, if 2 columns are equal.
i have a example:
data.frame1
cu.nr. name value
A 1 Evo 100
B 1 Mer 80
C 2 Ford 50
And now i want to match the value to data.frame 2 in dependence of cu.nr.
and name.
data.frame2
cu.nr. name
A 33 Evo
B 1 Mer
C 1 Pold
as you can see, there is only one row with equal cu.nr. and name. How can i
match the data as desired?
The solution has to look like this one:
cu.nr. name Value
A 33 Evo
B 1 Mer 80
C 1 Pold
thanks.
Mat
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