Simon Blomberg wrote:
How about to insert a variable a2 inbetween the first and second columns
of dat:
dat2 <- cbind(dat[,1], a2=a2, dat[,2:3])
Where a2 is the new variable. This mangles the variable name for column
1, unfortunately. Surely someone else will offer a better solution.
Simon.
Just lose the commas:
> head(cbind(aq[1],data.frame(log(aq$Ozone)),aq[2:6]))
Ozone log.aq.Ozone. Solar.R Wind Temp Month Day
1 41 3.713572 190 7.4 67 5 1
2 36 3.583519 118 8.0 72 5 2
3 12 2.484907 149 12.6 74 5 3
4 18 2.890372 313 11.5 62 5 4
5 NA NA NA 14.3 56 5 5
6 28 3.332205 NA 14.9 66 5 6
(Otherwise the infamous drop-to-vector effect will bite you and you need
drop=FALSE, but this does not apply to list-like indexing. For matrices
you do need drop=FALSE.)
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
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