[Rd] improved error message when existing implicit S4 generic is not imported?

From: Martin Morgan <mtmorgan_at_fhcrc.org>
Date: Sat, 25 Feb 2012 22:39:49 -0800

pkgA's NAMESPACE has

   importFrom(graphics, plot)

R/foo.R has

   setMethod("plot", "A", function(x, y, ...) {})

During R CMD INSTALL pkgA_1.0.tar.gz we are told

pkgB has in its DESCRIPTION

   Depends; pkgA


   importFrom(graphics, plot)

R/bar.R has

   setMethod("plot", "B", function(x, y, ...) {})

During R CMD INSTALL pkgB_1.0.tar.gz we are told

i.e., no implicit generic created (because graphics::plot already has an implicit generic created, when the pkgA dependency was attached?). and also

which doesn't seem accurate, rather "'pkgB' does not import S4 implicit generic for 'plot' created by 'pkgA'"

 > sessionInfo()
R Under development (unstable) (2012-02-25 r58492) Platform: x86_64-unknown-linux-gnu (64-bit)


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Received on Sun 26 Feb 2012 - 06:53:14 GMT

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