Hi,
Is it a requirement to provide the break intervals of the cut function in
ascending order? The help documentation for cut didn't specify this but the
labels returned are reversed if I indicate the break intervals in a descending
order. Here is an example
tbl<-data.frame(x=c(0:10))
tbl$ascending<-cut(tbl$x, breaks=c(0,3,5,9,99),
labels=c('<3','4-5','6-9','>9'), include.lowest=T)
tbl$descending<-cut(tbl$x, breaks=c(99,9,5,3,0),
labels=c('>9','6-8','4-5','<3'), include.lowest=T)
tbl
x ascending descending
1 0 <3 >9
2 1 <3 >9
3 2 <3 >9
4 3 <3 >9
5 4 4-5 6-8
6 5 4-5 6-8
7 6 6-9 4-5
8 7 6-9 4-5
9 8 6-9 4-5
10 9 6-9 4-5
11 10 >9 <3
Appreciate any guidance on this.
Regards
Wing Keong
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