[R] Query about using setdiff

[Dimitris Rizopoulos]

try something along these lines (untested):

DF1[DF1$id %in% DF2$id2, c("val1", "val2")]
DF1[!DF1$id %in% DF2$id2, c("val1", "val2")]


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
      http://www.student.kuleuven.be/~m0390867/dimitris.htm


Quoting lalitha viswanath <lalithaviswanath at yahoo.com>:

> Hi
> I have two dataframes
> names(DF1) = c("id", "val1", "val2");
>
> names(DF2) = c("id2");
>
> Ids in DF2 are a complete subset of those in DF1
>
> How can I extract entries from DF1 where id NOT IN
> DF2.
>
> I tried setdiff(DF1, DF2); setdiff(DF1$id, DF2$id),
> etc.
> Although the latter eliminates the ids as required, I
> dont know how to extract val1 and val2 for the
> resultant set.
>
>
> Thanks
> Lalitha
>
>
>
> ____________________________________________________________________________________
> 8:00? 8:25? 8:40? Find a flick in no time
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> 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.
>
>



Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm