[R] strange warning message

Tong Wang wangtong at usc.edu
Sat Sep 30 07:00:53 CEST 2006

Hi Duncan:
     Thank you for your help last time,  since I do not use NULL to indicate empty enviroment, I think I'm fine. 
And yes, I did upgrade my R version recently,  but how comes I still get this warning for new files created
and saved after that update ? Is there anyway to get rid of this message ?
     Thanks a lot . 


----- Original Message -----
From: Duncan Murdoch <murdoch at stats.uwo.ca>
Date: Saturday, September 23, 2006 5:59 pm
Subject: Re: [R] strange  warning message
To: Tong Wang <wangtong at usc.edu>
Cc: r-help at stat.math.ethz.ch

> On 9/23/2006 7:15 PM, Tong Wang wrote:
> > Hi Everyone,
> >     I recently start to get this warning message,  while loading 
> files in to R.   Could someone tell me what does it mean ?
> > I am using R 2.3.0 with Emacs on WinXP.
> > 
> >     use of NULL environment is deprecated 
> The files were saved in an earlier version of R, which used NULL to 
> indicate the base environment.  R is telling you that NULL is not a 
> legal environment.  It should be automatically converted to baseenv().
> In a number of cases, people used NULL to indicate an empty 
> environment 
> (even though there was no such thing when NULL was used); if that's 
> true 
> for your code, then you'll need to fix it.  emptyenv() now gives 
> you an 
> empty environment if that's what you really want.
> Duncan Murdoch

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