Bernie McConnell <bm8 at st-andrews.ac.uk> writes:
> GoodDay,
>
> Could someone please tell me why b (below) does not return a vector of 10
> chron objects? Hopefuly I am being remarkably naive or have missed
> something obvious in the chron documentation. I'm running Win NT 4.0
I don't think you're particularly naive...
The root of this seems to be this
Browse[1]> unclass(e1)+c(1.5,1.5)
[1] 3658.5 3658.5
Browse[1]> unclass(e1)+c(1.5)
[1] 3658.5
attr(,"format")
[1] "d/m/y" "h:m:s"
attr(,"origin")
month day year
1 1 1970
This is a generic issue, recycling kills attributes:
> x<-1
> attr(x,"foo")<-"bar"
> x+1
[1] 2
attr(,"foo")
[1] "bar"> x+1:2
[1] 2 3
I forget whether there's a logic to this, but S-Plus 3.4 is doing the
same thing. Hence, Ops.dates inside chron probably needs fixing.
Specifically at the line
val <- NextMethod(.Generic)
(original problem:)
> > library(chron)
> > gps.start.date <<- chron("06/01/80",
> + "00:00:00",
> + format=c("d/m/y","h:m:s"))
..> <bold>> b <<- gps.start.date + rep(1.5,10)
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._