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import of data set and warning from R CMD check

3 messages · Thierry Onkelinx, Pascal A. Niklaus

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Hi all,

When checking an R package, I get:

|Consider adding importFrom("datasets","CO2")

(this data set is used in some example code)

However, when I add the suggested 'importFrom' statement to NAMESPACE 
(using roxygen2), I get
|
|Error :object ?CO2? is not exported by 'namespace:datasets'|
||
|I understand that datasets are not exported, and the comment printed by 
'R CMD check' seems not to have any consequences, but it nevertheless 
seems inconsistent to me. But maybe I miss something here...

Pascal

|
3 days later
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Dear Pascal,

You could try to use data(CO2, package = "datasets") instead of data(CO2)

Best regards,

ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

2016-06-17 17:45 GMT+02:00 Pascal A. Niklaus <pascal.niklaus at ieu.uzh.ch>:

  
  
1 day later
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Dear Thierry,

Thanks, that indeed solved the warning.

Still, I think the message from R CMD check is confusing since the hint 
seems not to work with the current R version.

Pascal
On 2016-06-21 11:31, Thierry Onkelinx wrote: