[R] use of NULL environment is deprecated?
sundar.dorai-raj at pdf.com
Wed Jul 12 00:43:01 CEST 2006
Patrick Connolly wrote:
> ]> version
> platform x86_64-unknown-linux-gnu
> arch x86_64
> os linux-gnu
> system x86_64, linux-gnu
> major 2
> minor 3.1
> year 2006
> month 06
> day 01
> svn rev 38247
> language R
> version.string Version 2.3.1 (2006-06-01)
> I see in the NEWS file the line:
> o Use of NULL as an environment is deprecated and gives a warning.
> Which duly happens. I get warnings like this:
> use of NULL environment is deprecated
> My problem is that I don't know what is being referred to. A little
> birdie tells me that in later versions of R, those warnings will
> become errors so I need to work out where they're coming from before I
> can use later versions.
> My question is: How does one work out which is being referred to by
> such a message? The traceback() function is useful when failure
> occurs. Is there an analagous way of looking into warnings?
This will happen when you load a package that was created for an earlier
version of R. If this is your own package, recreate the package using
R-2.3.1. If it's a package on CRAN, then update.packages() should also
do the trick.
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