Hi Dennis,
It still uses paste(), but this isn't so bad:
SET2[!(do.call(paste, SET2) %in% do.call(paste, SET1)),]
You could even turn it into a function. This one checks for matching
rows in the data frame with more rows, but you could take out the
conditional if you want order of arguments to be
Colleagues,
(R: 2.13.0; OS X)
I often receive sequential datasets in which there are new rows interposed
between existing rows. For example:
SET1 <- data.frame(list(LETTERS=LETTERS[c(1:4, 6:10)], NUMBERS=c(1:4,
6:10)))
SET2 <- data.frame(list(LETTERS=LETTERS[1:10], NUMBERS=1:10
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