Failure to subset in R v 2.8.0
Alan Cohen wrote:
Hello,
I've been using a pre-release version of R v 2.8.0 for Windows for the last couple months. I think that there have been consistent problems with subsetting data sets, but I had usually been able to find work-arounds or was unable to confirm this as a bug. I think now I have, and would love advice on what to do if I've made some error.
The data set in question ("c") has 500,000 observations and 44 variables. The problematic variable, "month," takes integer values 1:12, and all are present in the data set:
unique(c$month)
[1] 11 10 9 8 12 1 7 4 6 2 5 3 However, I can't select observations of c for certain values of month:
...
length(c$month[c$month==11])
[1] 0
Hmm. Does any of these make us any wiser? mode(c$month) any(c$month==11) table(c$month) dput(unique(c$month))
O__ ---- Peter Dalgaard ?ster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907