[Rd] R 2.3.0: Use of NULL as an environment is deprecated

[Uwe Ligges]

Pfaff, Bernhard Dr. wrote:

> Pfaff, Bernhard Dr. wrote:
> 
> 
>>Pfaff, Bernhard Dr. wrote:
>>
>>
>>
>>>Dear R-Devel subscriber,
>>>
>>>first, let me express my thank to the R-Core team for the new release!
>>
>>I
>>
>>
>>>appreciate their efforts and time spent to enhance R.
>>>In accordance with the 'NEWS' file (see excerpt of it below), 
>>>
>>>[...
>>>o	Changed the environment tree to be rooted in an empty
>>>	environment, available as emptyenv().  baseenv() has been
>>>	modified to return an environment with emptyenv() as parent,
>>>	rather than NULL.
>>>
>>>...
>>>
>>>o	Use of NULL as an environment is deprecated and gives a warning.
>>>...]
>>>
>>>I detected the warning message as announced for a couple of
>>
>>contributed
>>
>>
>>>packages, e.g.
>>>
>>>library(ape)
>>>library(car)
>>>library(chron)
>>>library(urca)
>>
>>
>>
>>Not so for me. Are you sure you have reinstalled those packages under 
>>R-2.3.0?
>>
>>Uwe Ligges
>>
>>
>>Dear Uwe,
>>
>>thank you for your hint. That fixes the warnings for packages 'ape',
>>'car' and 'chron' issued formerly. However, even after a fresh install
>>the warnings still show up for the packages 'VLMC' and 'urca', as an
>>example.
>>Any further clues are most welcome. 
> 
> 
> 
> OS? R release?
> 
> and please report the result of
> 
>    packageDescription("urca")
>    packageDescription("VLMC")
> 
> Uwe Ligges
> 
> 
> Hello Uwe,
> 
> here is the detailed information:
> 
> 
> 
>>R.version
> 
>                _                         
> platform       i386-pc-mingw32           
> arch           i386                      
> os             mingw32                   
> system         i386, mingw32             
> status                                   
> major          2                         
> minor          3.0                       
> year           2006                      
> month          04                        
> day            24                        
> svn rev        37909                     
> language       R                         
> version.string Version 2.3.0 (2006-04-24)
> 
> 
> Package: urca
> Version: 0.9-2
              ^^^
> Date: 2006-02-25
> Title: Unit root and cointegration tests for time series data
> Author: Bernhard Pfaff <bernhard.pfaff at pfaffikus.de>
> Maintainer: Bernhard Pfaff <bernhard at pfaffikus.de>
> Depends: R (>= 2.0.0)
> Imports: nlme, methods, graphics, stats
> LazyLoad: yes
> Description: Unit root and cointegration tests encountered in applied
>         econometric analysis are implemented.
> License: GPL version 2 or newer
> URL: http://www.r-project.org
> Packaged: Sat Feb 25 19:34:29 2006; bp
> Built: R 2.3.0; ; 2006-03-03 21:12:31; windows
                          ^^^^^

Well, 0.9-3 is on CRAN, so you have *not* upgraded your *own* package!!!

Please upgrade ALL your packages and re-install also ALL those that are 
from prior R releases.

Uwe Ligges






> -- File: C:/R/package/urca/DESCRIPTION 
> 
> 
> 
> 
>>packageDescription("VLMC")
> 
> Package: VLMC
> Version: 1.3-9
> Note: ===== vlmc.version in R/vlmc.R
> Date: 2005-10-06
> Author: Martin Maechler <maechler at stat.math.ethz.ch>
> Maintainer: Martin Maechler <maechler at stat.math.ethz.ch>
> Title: VLMC -- Variable Length Markov Chains
> Description: Functions, Classes & Methods for estimation, prediction,
>         and simulation (bootstrap) of VLMC -- Variable Length Markov
>         Chain -- Models
> Depends: stats, MASS
> License: GPL version 2 or later
> Packaged: Thu Oct 6 15:00:09 2005; maechler
> Built: R 2.3.0; i386-pc-mingw32; 2006-03-03 19:04:48; windows
> 
> -- File: C:/R/package/VLMC/DESCRIPTION 
> 
> Both packages have Depends/Imports directives in their DESCRIPTION
> files. Now, I do get the following for VLMC if I do a 'library(MASS)'
> first:
> 
> 
>>library(MASS)
> 
> Warning message:
> Verwendung der NULL Umgebung ist veraltet 
> 
>>library(VLMC)
>>
> 
> 
> and likewise for urca:
> 
> 
>>library(nlme)
> 
> Warning message:
> Verwendung der NULL Umgebung ist veraltet 
> 
>>library(urca)
>>
> 
> 
> 
> 
> 
>>Best,
>>Bernhard
>>
>>
>>
>>>Now, I am wondering what would be a suitable/elegant way to fix the
>>>packages' code such that the warning does not appear any longer. I am
>>>adressing this question to R-devel, because this might also be of
>>>interest for other package mainatiners.
>>>
>>>Many thanks in advance for any hints and pointers.
>>>
>>>Regards,
>>>Bernhard
>>>
>>>
>>>
>>>
>>>Dr. Bernhard Pfaff
>>>Global Structured Products Group
>>>(Europe)
>>>
>>>Invesco Asset Management Deutschland GmbH
>>>Bleichstrasse 60-62
>>>D-60313 Frankfurt am Main
>>>
>>>Tel: +49(0)69 298 07230
>>>Fax: +49(0)69 298 07178
>>>Email: bernhard_pfaff at fra.invesco.com 
>>>*****************************************************************
>>>Confidentiality Note: The information contained in this
>>
>>mess...{{dropped}}
>>
>>
>>>______________________________________________
>>>R-devel at r-project.org mailing list
>>>https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
> 
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