[R-pkg-devel] function name conflict problem

[Duncan Murdoch]

On 04/02/2020 4:21 p.m., sierrastew using mindspring.com wrote:
> In trying to develop a package to be submitted to CRAN, when I do Install
> and Reload or devtools::check(), I get the warning:
> 
>   
> 
> Warning: replacing previous import 'ellipse::pairs' by 'graphics::pairs'
> when loading 'karon'
> 
> Warning: replacing previous import 'MVN::mvn' by 'mgcv::mvn' when loading
> 'karon'
> 
>   
> 
> I need one function each from the packages ellipse and mgcv (I do not need
> pairs from ellipse and mvn from mgcv).  To restrict to the function that I
> need, I have used the commands
> 
> @importFrom  ellipse  ellipse
> 
> @importFrom  mgcv  in.out
> 
>   
> 
> NAMESPACE includes the lines
> 
> importFrom(ellipse,ellipse)
> 
> importFrom(mgcv,in.out)
> 
>   
> 
> However, DESCRIPTION does not restrict the functions imported from ellipse
> and mgcv; it has
> 
> Imports: MVN, MASS, scatterplot3d, rgl, mgcv, randomForest, rpart, partykit,
> Formula, ellipse,..
> 
>   
> 
> Do these warnings need to be solved before submitting to CRAN?
> 
> Is it necessary to edit DESCRIPTION  If so, what should be done?
> 
> Is there some other potential solution?

I don't know if they *must* be fixed, but they should be.  Something in 
your NAMESPACE file (derived from some comment in your code by roxygen2) 
is importing ellipse::pairs, even though you say you don't want to do 
that.  You should fix that.

 From what we can see, your DESCRIPTION file is fine.  The problem lies 
in NAMESPACE.

Duncan Murdoch