On Tue, 22 Jul 2008, [EMAIL PROTECTED] wrote:
Hi the list (well, half of the list, only the one who are not on holidays...)
I am trying to make an S4 package. When I run it on a console, everything
seems ok. When I run R CMD check, I got an error --- 8<
----------------------
Error in setMethod("plot", "ClassX", function(x, y) { : no existing
definition for function "plot"
--- 8< ----------------------
If I add setGeneric("plot",function(x,y,...){standardGeneric("plot")})
in my code, then everything is OK.
This is a surprise for me since I taught that we do not need to redefine as
generic the function that are already generic, like "plot". Am I wrong ?
Yes. And do read the error message. It says
no existing definition for function "plot"
so this is not if the function is S3 or S4 generic, but that no such
function is visible.
Looks like you forgot to declare a dependence on (or import) package
graphics.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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