[R] Message produced under R 3.6.0.

Marc Schwartz m@rc_@chw@rtz @end|ng |rom me@com
Tue Apr 30 02:01:01 CEST 2019

Hi Guys,

I suspect that this entry from news() for 3.6.0 is relevant:

"When loading namespaces, S3 method registrations which overwrite previous registrations are now noted by default (using packageStartupMessage())."

Always a good idea to read the NEWS file with a x.y point release. Peter usually includes it in his release announcement e-mail:



Marc Schwartz

> On Apr 29, 2019, at 7:32 PM, Rolf Turner <r.turner using auckland.ac.nz> wrote:
> On 30/04/19 11:08 AM, Bert Gunter wrote:
>> Offlist, as this might be complete baloney.
> Thanks Bert.
> I am CC-ing this reply to the r-help list since your suggestion is *NOT* complete baloney at all!
>> What dependencies does your package have? -- is it possible that some of these dependent packages have made changes or added features that have ggplot2 etc. dependencies that cause these issues?
> <SNIP>
> The package has no dependencies as such, but "Imports" a number of packages.  I tried loading these, one by one, and when I did
> library(brms)
> I got the message that was triggered by loading my package.  So that is the source of the problem.  If it is indeed a problem.
> The question remains:  is this message something that I (or the maintainer of brms) should be worried about?
> cheers,
> Rolf
>> On Mon, Apr 29, 2019 at 3:55 PM Rolf Turner <r.turner using auckland.ac.nz <mailto:r.turner using auckland.ac.nz>> wrote:
>>    I just installed the latest version of R on my laptop (running Ubuntu
>>    18.04; used "sudo apt-get install r-base".)
>>    Now when I load a package that I have written I get a message on screen:
>>     > Registered S3 methods overwritten by 'ggplot2':
>>     >   method         from
>>     >   [.quosures     rlang
>>     >   c.quosures     rlang
>>     >   print.quosures rlang
>>     > Registered S3 method overwritten by 'dplyr':
>>     >   method               from
>>     >   as.data.frame.tbl_df tibble
>>     > Registered S3 method overwritten by 'xts':
>>     >   method     from
>>     >   as.zoo.xts zoo
>>    What is the import of this (mysterious and cryptic) pronouncement?  I
>>    don't understand it at all.  My package makes no use of ggplot2, dplyr
>>    or xts.
>>    Should I be worried?  Are there adjustments that I should make to my
>>    package (e.g. to NAMESPACE)?
>>    Thanks for any tips.
>>    cheers,
>>    Rolf Turner
>>    --     Honorary Research Fellow
>>    Department of Statistics
>>    University of Auckland
>>    Phone: +64-9-373-7599 ext. 88276

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