[EMAIL PROTECTED] writes:
> Full_Name: Roland Puntaier
> Version: 1.8.1
> OS: Windows XP
> Submission from: (NULL) (62.99.238.78)
>
>
> I have a data frame with some columns being logical.
> I wanted to calculate a column that is an AND combination of the other logical
> columns.
> I tried to use
> apply(df,1,all)
> It did not work because of the implicit string conversion.
> So I made the functions
> All<-function(...) all(as.logical(...))#because all cannot be used with apply
> Any<-function(...) any(as.logical(...))#because any cannot be used with apply
> Now
> apply(df,1,All)
> seemed to work,
> but produced some NAs where there was no reason for them.
> I debugged apply and found that some logical values are transformed to " TRUE"
> instead of "TRUE". I did not follow that up closer. Instead I worked around it
> by doing the string conversion myself and then call apply(dfc,1,All)
It's as documented (i.e. no bug) and the five-letter field for TRUE is
consequence of using format().
Behaviour has been changed in r-devel though, since you weren't the
first to be annoyed by it....
Meanwhile, I believe that do.call("cbind",df) is a better workaround.
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
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