Assuming your data are in a data frame, make anorher data frame with the type
and type2 columns and merge it with your original data frame.
?merge
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
On September 14, 2015 10:35:38 AM PDT, jpm miao <miao...@gmail.com> wrote:
>My code is:
>
>
>
>if(type=="none")
>
> type2<-"nc"
>
>if(type=="drift")
>
> type2<-"c"
>
>if(type=="trend")
>
> type2<-"ct"
>
>
>I am wondering if there's a concise way to write a mapping from type to
>type2, especially when the number of categories is high. Thanks!
>
> [[alternative HTML version deleted]]
>
>______________________________________________
>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
