Hi there,
I have a question, which I thought is very easy to solve, but somehow I can't
find a solution. Probably someone could help me quickly?
Here it is:
I have two matrices:
a
[,1] [,2] [,3]
[1,] 1 4 9
[2,] 2 6 10
[3,] 3 6 11
[4,] 4 8 12
b
[,1] [,2]
[1,] 1 4
[2,] 2 5
[3,] 3 6
Now I want to find out which rows of b can also be found in a (without its last
column). So the solution must be something like either "TRUE FALSE TRUE" or the
rows where their is a match (rows 1 and 3)
Till now I have tried things like b %in% a[,1:2] or so but that doesn't work
because I want to compare the WHOLE row of b with the whole row of a without
column 3.
Thank you very much for any help.
Regards, Antje
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