[R] Looping over names of multiple data frames in an R for() loop XXXX

jim holtman jholtman at gmail.com
Fri Oct 11 21:11:09 CEST 2013


I think you want 'assign' at that point.  Would suggest using a 'list'
to store the input instead of unique named objects.  'list's are
easier to manage.

Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.


On Fri, Oct 11, 2013 at 2:59 PM, Dan Abner <dan.abner99 at gmail.com> wrote:
> Hi everybody,
>
> I thought I was using the get() fn correctly here to loop over multiple
> data frame names in an R for() loop. Can someone advise?
>
>
>> miss<-c("#NULL!","999")
>> d<-c("d1","d2","d3","d4")
>>
>> for(i in 1:4){
> +
> + miss1<-ifelse(i<=2,miss[1],miss[2])
> + miss1
> +
> + get(d[i])<-read.csv(paste("C:\\DATA\\Data\\Original\\",dsn[i],sep=""),
> + na.strings=c(miss1,"999999999"))
> +
> + head(get(d[i]))
> +
> + write.csv(get(d[i]),paste("C:\\DATA\\Data\\",dsn[i],sep=""),
> + na=".")
> +
> + }
> Error in get(d[i]) <- read.csv(paste("C:\\DATA\\Data\\Original\\", dsn[i],
> :
>   could not find function "get<-"
>>
>
> Thanks!
>
> Dan
>
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>
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