I have two columns and I want to count hwo many pairs I have of the same
element. For example. If I have
a = c(1,2,3,4,5)
b= c(12, 1, 34, 2, 5, 0, 10, 100, 11)
It should return 3 (since 1, 2 and 5 occur in both columns).
Columns need not be of the same length.
-- Thanks, Jim. [[alternative HTML version deleted]] ______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.Received on Sun 17 Apr 2011 - 03:07:38 GMT
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