Compare two data sets
Here is how to find the values in common:
dat1 <- paste('a', 1:6, sep='')
dat2 <- paste('a', c(2,4:6), sep='')
# find the data in common
intersect(dat1, dat2)
[1] "a2" "a4" "a5" "a6"
On 3/25/08, amarkey at uiuc.edu <amarkey at uiuc.edu> wrote:
I would like to compare two data sets saved as text files (example below) to determine if both sets are identical(or if dat2 is missing information that is included in dat1) and if they are not identical list what information is different between the two sets(ie output "a1", "a3" as the differing information). The overall purpose would be to remove "a1" and "a3" from dat 1 so both dat1 and dat2 are the same. My R abilities are somewhat limited so any suggestions are greatly appreciated. Alysta dat1 a1 a2 a3 a4 a5 a6 dat2 a2 a4 a5 a6
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