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dubio
2005 Dec 06
3
merging with aggregating
Dear List,
I have two data.frame of the following form:
A:
n V1 V2
1 12 0
2 10 8
3 3 8
4 8 4
6 7 3
7 12 0
8 1 0
9 18 0
10 1 0
13 2 0
B:
n V1 V2
1 0 2
2 0 3
3 1 9
4 12 8
5 2 9
6 2 9
8 2 0
10 4 1
11 7 1
12 0 1
Now I want to merge those frame to one data.frame with summing up the
columns V1 and V2 but not the column n. So the result