RE: [R] question about subset

From: Berton Gunter <gunter.berton_at_gene.com>
Date: Fri 06 May 2005 - 08:36:20 EST


?row.names

"The business of the statistician is to catalyze the scientific learning process." - George E. P. Box    

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch
> [mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of jose silva
> Sent: Thursday, May 05, 2005 3:31 PM
> To: r-help@stat.math.ethz.ch
> Subject: [R] question about subset
>
> Dear R users:
>
> I have a quick question:
>
> is there any way to get a subset of a data frame with the
> ordered indexes or without these indexes?
>
> example:
>
> mydata<- data.frame(A=seq(1,10), B=c(-5,2,-4,6,-8,-9,2,5,7,0))
> subset(mydata, B>0)
>   A B
> 2 2 2
> 4 4 6
> 7 7 2
> 8 8 5
> 9 9 7
>
> I would like to obtain this:
>
>   A B
> 1 2 2
> 2 4 6
> 3 7 2
> 4 8 5
> 5 9 7
>
> or this
>
>   A B
>   2 2
>   4 6
>   7 2
>   8 5
>   9 7
>
> I think this is possible but I dont know how...
> any sugestion?
> thanks
>
> jose silva
> [[alternative HTML version deleted]]
>
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R-help@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 Received on Fri May 06 08:45:30 2005

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