> On 25 Oct 2018, at 16:06 , Knut Krueger <rh...@krueger-family.de> wrote:
>
> Hi Bert,
> another question for indexing
> 1. is there a good manual for indexing
?Extract is at least authoritative....
>
> 2. is it possible to get !%in%
> f.e
Yes: x[!(x$A %in% y$B),]
-pd
> x =data.frame("A"=c(1:5),"C"=c("A","B","C","D","E"))
> y =data.frame("B"=c(1,3,5))
> test = x[x$A %in% y$B,]
> test = x[x$A %in% y$B,]
>
> test
> A C
> 1 1 A
> 3 3 C
> 5 5 E
>
>
> means: the result where I am looking for is:
> test
> A C
> 2 2 B
> 4 4 D
>
> no problem with a loop but in a short way I do not find a solution
>
> Kind Regards Knut
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk Priv: pda...@gmail.com
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