R help - Jan 2015 - global environment

Hi
I am trying to make some changes in data frame and return it to function .this
is my function
rm.outliers = function(model,xsys)
{

  rst = rstudent(model)
  outliers<<-vector("numeric",10)
  xsys<<-xsys
for(i in 1:length(rst))
  {
    if(rst[i]<-3  & rst[i]>=-3)
      {
      #print("this is not outlier")
      print(i)
    }
    else
      {
      print("this is an outlier")
      print(i)
      outliers[i]<<-c(i)
      print(outliers)

    }

    i<-i+1
  }

xsys<-xsys[-outliers,]
print(" printing rows")
nrow(xsys)
return(xsys)
}
After returning xsys dataframe its not making changes in my global environment
data frame.
I tried assign and <<- but no use.

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Rewrite it with spaces between your assigns and numbers. This line is
unclear to me: if(rst[i]<-3  & rst[i]>=-3)

Is it supposed to be rst[i] <- 3, or rst[i] < -3? R might be
misinterpreting what you're trying to get it to do.

On Mon, Jan 12, 2015 at 1:18 AM, Methekar, Pushpa (GE Transportation,
Non-GE) <pushpa.methekar at ge.com> wrote:
> Hi
> I am trying to make some changes in data frame and return it to function
> .this is my function
> rm.outliers = function(model,xsys)
> {
>
>   rst = rstudent(model)
>   outliers<<-vector("numeric",10)
>   xsys<<-xsys
> for(i in 1:length(rst))
>   {
>     if(rst[i]<-3  & rst[i]>=-3)
>       {
>       #print("this is not outlier")
>       print(i)
>     }
>     else
>       {
>       print("this is an outlier")
>       print(i)
>       outliers[i]<<-c(i)
>       print(outliers)
>
>     }
>
>     i<-i+1
>   }
>
> xsys<-xsys[-outliers,]
> print(" printing rows")
> nrow(xsys)
> return(xsys)
> }
> After returning xsys dataframe its not making changes in my global
> environment data frame.
> I tried assign and <<- but no use.
>
>         [[alternative HTML version deleted]]
>
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