I was surprised by: > test <- matrix( as.character(1:4), 2) > test [,1] [,2] [1,] "1" "3" [2,] "2" "4" > apply(test, 1, paste, sep="+") [,1] [,2] [1,] "1" "2" [2,] "3" "4" > apply(test, 1, paste, sep="*") [,1] [,2] [1,] "1" "2" [2,] "3" "4" > te <- matrix(1:4, 2) > te [,1] [,2] [1,] 1 3 [2,] 2 4 > apply(te, 1, sum) [1] 4 6
Why doesn't paste behave in apply as sum? Kjetil -- Checked by AVG Free Edition. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html