[R] options --- na.rm , save-on-exit

Uwe Ligges ligges at statistik.uni-dortmund.de
Sat Jul 3 18:15:04 CEST 2004

ivo_welch-rstat8783 at mailblocks.com wrote:
> dear R wizzards:  two options() related questions.
> [a] options(na.action):  many of my variables have missing variables, so 
> I would like to set a default to ignore, especially in univariate 
> functions like mean() and median() .  alas, without na.rm=T in the 
> functions themselves, I always get an NA.  my code is full of na.rm=T is 
> there a magic invokation of options with na.action that is honored by 
> these functions?


> [b] options(?): how do I get R to not prompt me for saving the workspace 
> upon exit, but to instead automatically save the command history 
> .Rhistory but not the data .RData ?

you can define a function like:

Q <- function (save = "no", status = 0, runLast = TRUE){
   .Internal(quit(save, status, runLast))

and call Q(), if you want to exit.

Uwe Ligges

> help appreciated.
> sincerely,
> /iaw
> ---
> ivo welch
> professor of finance and economics
> brown / nber / yale
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html

More information about the R-help mailing list