Re: [R] strange warning message

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Sun 24 Sep 2006 - 00:59:29 GMT

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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