[R-pkg-devel] data and load version 3

[Uwe Ligges]

On 29.06.2020 22:55, Göran Broström wrote:
> I added two data sets (.rda) to my package eha, but when I build the new 
> version I get:
> 
>   WARNING: Added dependency on R >= 3.5.0 because serialized objects in 
> serialize/load version 3 cannot be read in older versions of R.  File(s) 
> containing such objects: ‘eha/data/swedeaths.rda’  ‘eha/data/swepop.rda’
> 
> In DESCRIPTION I have 'Depends: R (>= 3.0.0)'
> 
> After googling for a while (found nothing relevant in 'WRE'), I 
> understand that I have two options: (i) Change 'Depends' in DESCRIPTION 
> as suggested, and (ii) using save with 'version = 2' for the new files.
> 
> And, if I am recommended to choose (i), should I recreate the old data 
> files with 'version = 3'?
> 
> My guess is go for (i) and version = 3 for all data files, but I feel 
> that I need advise.

You may use version 3 for all, but you can also have a mix and only use 
vesion 3 for the new files.

Best,
Uwe Ligges
> 
> Thanks, Göran
> 
> ______________________________________________
> R-package-devel using r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-package-devel