how to concatenate factor vectors?
How do I concatenate two vectors of factors? --8<---------------cut here---------------start------------->8---
a <- factor(5:1,levels=1:9) b <- factor(9:1,levels=1:9) str(c(a,b))
int [1:14] 5 4 3 2 1 9 8 7 6 5 ...
str(unlist(list(a,b),use.names=FALSE))
Factor w/ 9 levels "1","2","3","4",..: 5 4 3 2 1 9 8 7 6 5 ... --8<---------------cut here---------------end--------------->8--- so, unlist(list()) works. is there a better way or is this how this is supposed to be done? Thanks!
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