[R] Selecting rows that are the same in separate data frames
simon_ecc at yahoo.co.uk
Tue Dec 9 15:57:44 CET 2008
I want to compare two matrices or data frames and select or get an index for
those rows which are the same in both. I have tried the following :
a = matrix ( 1:10, ncol = 2 )
b = matrix ( c ( 2,3,4,7,8,9 ), ncol = 2 )
a = as.data.frame ( matrix ( 1:10, ncol = 2 ) )
b = as.data.frame ( matrix ( c ( 2,3,4,7,8,9 ), ncol = 2 ) )
Any ideas please.
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