[R] Removing session variables

[Jim Holtman]

to remove an individual column:

classResults$subjEnglish <- NULL

to remove object:

rm(classResults)

to access student names:

row.names(classResults)

Sent from my iPad

On Mar 18, 2012, at 5:31, Ajay Askoolum <aa2e72e at yahoo.co.uk> wrote:

> If I create a data.frame using session variables as follows:
> 
> classResults<-data.frame(subjEnglish,gradeEnglish,subjFrench,gradeFrench,row.names=studentName)
> 
> 
> How can I remove the variables? I tried
> 
>> rm(names(classResults))
> Error in rm(names(classResults)) : 
>   ... must contain names or character strings
> 
> 
> Also, how can I include the row.names variable. I tried
> 
>> names(classResults)
> [1] "subjEnglish"  "gradeEnglish" "subjFrench"   "gradeFrench" 
> 
> 
> but this does not include that name.
> 
> Thanks.
>    [[alternative HTML version deleted]]
> 
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