Bug in merge() in R-2.0.0 alpha
Uwe Ligges <ligges@statistik.uni-dortmund.de> writes:
In some cases, merge() has a problem in R-2.0.0 alpha (2004-09-14):
x <- structure(c("a", "b", "2", "0.2-26", "O", "O"), .Dim = c(2, 3),
.Dimnames = list(c("1", "2"), c("P", "V", "2")))
y <- structure(c("a", "b", "2", "0.2-25", "O", "O"), .Dim = c(2, 3),
.Dimnames = list(c("1", "2"), c("P", "V", "1")))
merge(x, y, all.y=TRUE)
Error in "[<-"(`*tmp*`, ri, value = NULL) :
incompatible types
Looks like the NA handling has changed anywhere.
Names handling, more likely:
v <- structure(list("2" = NA), .Names = "2", class = "data.frame", row.names = "2")
u <- structure(list("2" = structure(1, .Names = "1", .Label = "O", class = "factor")), .Names = "2", class = "data.frame", row.names = "1")
uu <- structure(list("2" = structure(1, .Label = "O", class = "factor")), .Names = "2", class = "data.frame", row.names = "1")
rbind(v,u)
2 2 <NA> 1 O
rbind(v,uu)
2 2 <NA> 1 O
rbind(u,v)
Error during wrapup: incompatible types
rbind(uu,v)
2 1 O 2 <NA> (Notice that the only difference between u and uu is the .Names bit)
O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907