It seems that Surv objects do not sort correctly. This seems to be a bug.
Anyone else found this?
>survival.data
[1] 4+ 3 1+ 2 5+
>class(survival.data)
[1] "Surv"
>sort(survival.data)
[1] 2 1+ 4+ 3 5+
An easy work-around is to define a function sort.Surv
>sort.Surv<-function(a){ord<-order(a[,1]); a[ord]}
>sort(survival.data)
[1] 1+ 2 3 4+ 5+
I am using R 3.1.2 GUI 1.65 Mavericks build (6833) running under Yosemite.
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
