[Rd] Including a single function from a package
murdoch at stats.uwo.ca
Fri May 5 14:58:20 CEST 2006
On 5/5/2006 8:42 AM, Ken Kelley wrote:
> Hello all.
> I'm building a package where I want to include a function from two
> different packages. In particular, I want to include mvrnorm and
> hyperg_2F1 from MASS and gsl, respectively (but the specific functions
> do not matter). With what I've tried after reading the "Specifying
> imports and exports" section from the "Writing R Extensions" manual, I
> get an error: "Namespace dependencies not required."
> My NAMESPACE file consists of the following:
> importFrom(MASS, mvrnorm)
> importFrom(gsl, hyperg_2F1)
I don't see this in a quick test in the current R-patched.
> A completely separate issue is that when running check, I get a warning
> at the "checking S3 generic/method consistency" line that states:
> "Warning: use of NULL environment is depreciated." I've looked at the
> "Generic functions and methods" in the Writing R Extensions manual and
> I'm still not sure what the "use of NULL environment is depreciated." I
> suppose this is not a big deal, but it seems best not to have any warnings.
It indicates a bug somewhere or other, but the version of R you're using
(you didn't say) is willing to work around it for now. The next version
From the location where you saw the error, it looks like a bug in R
rather than in your code, but surely such a thing would have been seen
before. Are you using an unreleased version?
This may also explain the problems with your namespace file.
> I'm sure I'm just missing something simple on both of these issues. Any
> insight would be appreciated. I'm building the package with Win. XP.
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