[R-pkg-devel] NAMESPACE importFrom("stats", "uniroot")

Thanks a lot - I have added
@importFrom stats uniroot
And #' @importFrom stats uniroot in the NAMESPACE otherwise generated 
by roxygen - I can't make it work - the first is not processed and the 
next makes no difference apart from deleting the former NAMESPACE 
file. I have tried adding the lines to the r file running uniroot - I 
seem to be misunderstanding what goes on

Best wishes
Troels

-----Oprindelig meddelelse-----
Fra: I?aki Ucar <iucar at fedoraproject.org>
Sendt: 11. januar 2019 17:40
Til: Troels Ring <tring at gvdnet.dk>
Cc: package-develop <r-package-devel at r-project.org>
Emne: Re: [R-pkg-devel] NAMESPACE importFrom("stats", "uniroot")

On Fri, 11 Jan 2019 at 17:31, Troels Ring <tring at gvdnet.dk> wrote:

Dear friends - I'm slowly learning to make packages in RStudio and 
it seems impressive. I managed now to have my acidbase package pass 
the check-package test with this result

checking R code for possible problems ... NOTE

  pH_general: no visible global function definition for 'uniroot'

  Undefined global functions or variables:

    uniroot

  Consider adding

    importFrom("stats", "uniroot")

  to your NAMESPACE file.



0 errors v | 0 warnings v | 1 note x



R CMD check succeeded



So I have much use of uniroot in the package but get this "note" 
above and a suggestion to augment the NAMESPACE file - so even 
though it was issuing : # Generated by roxygen2: do not edit by hand

I of course tried adding by hand - and in the next run the NAMESPACE 
file was quite empty and without any exports and the added import 
while before it exported a number of functions. So I deleted this 
unwelcome NAMESPACE and got the old one back.

I also tried adding importFrom("stats", "uniroot") as #'
@importFrom("stats", "uniroot") to the r file with the routine using 
uniroot but that didn't change the NAMESPACE or remove the note when 
checking. It may be no big problem - but I'd like to see no notes or 
warnings

The syntax is "@importFrom stats uniroot". See roxygen2's docs:

https://cran.r-project.org/web/packages/roxygen2/vignettes/namespace.h
tml#imports

If you don't use this function many many times, it is even better to use stats::uniroot instead.

I?aki