[R] elegant way to remove cases with many different ids

[Göran Broström]

On 2015-01-23 11:09, Ivan Calandra wrote:
> Hi Alain,
>
> I think you're looking for %in% (see ?'%in%' for the help page)
>
> id.vector <- c(1,3)  ## here you define the values you want to select:
> x, y, z...
> subset(df, id %in% id.vector)


But note the Warning in

 >?subset

Göran

>
> HTH,
> Ivan
>
> --
> Ivan Calandra, ATER
> University of Reims Champagne-Ardenne
> GEGENAA - EA 3795
> CREA - 2 esplanade Roland Garros
> 51100 Reims, France
> +33(0)3 26 77 36 89
> ivan.calandra at univ-reims.fr
> https://www.researchgate.net/profile/Ivan_Calandra
>
> Le 23/01/15 10:50, D. Alain a écrit :
>> Dear R-List,
>>
>> I have nested data with cases grouped by IDs and I want to remove all cases with specific IDs.
>>
>> something like
>>
>> df<-data.frame(id=c(1,1,1,2,2,2,3,3,3,4,4,4,5,5,5),var=c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15))
>>
>> subset(df,id== 1 | id == 3)
>>
>> Having a very large dataset with many IDs to remove this solution leaves me to write quite a long list of "id == x | id == y | id == z ...". I wonder if there is a more elegant way to do this? I tried with "id = c(x,y,z)" but this did not give the proper result.
>>
>> Any suggestions? Thank you!
>>
>> Best wishes
>>
>> Alain
>>
>>
>>
>>
>>
>>
>> 	[[alternative HTML version deleted]]
>>
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>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> and provide commented, minimal, self-contained, reproducible code.
>