Martin Maechler <[EMAIL PROTECTED]> a écrit :
"CG" == Christophe Genolini <[EMAIL PROTECTED]> on Tue, 22 Jul 2008 19:04:37 +0200 writes:CG> Prof Brian Ripley <[EMAIL PROTECTED]> a écrit : >> 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. CG> I would have forgot if I knew that I have to declare CG> such a dependence... Do we have to declare all the CG> depence to all the package ? To base ? To stats ? not to base, but to all other packages (since R can be loaded without any packages but base). CG> I thaught that the package that are include in R when we CG> start it had not to be include. You thought wrongly, and all our documentation mentions that you need to use 'Depends:' correctly (and 'Imports(..)' in NAMESPACE if you make use of one). {and please strongly note the correct spelling of "thought" !} Martin
I correct DESCRIPTION and NAMESPACE adding Depends and import. But I still get the message : checking for missing documentation entries ... WARNING Undocumented S4 methods: generic 'plot' and siglist 'ClassX' I can't find what is wrong... ----- DESCRIPTION ----- Package: packS4 Type: Package Title: Toy example of S4 package Version: 0.5 Date: 2008-07-22 Author: Christophe Genolini / INSERM U669 Maintainer: <[EMAIL PROTECTED]> Description: Package built to illustration package construction with S4 License: GPL (>=2) LazyLoad: yes Depends: methods, graphics Collate: global.R ClassX.R ClassY.R ClassX-ClassY.R ClassZ.R ------ NAMESPACE ------ export( "classZ", "functionClassicA" ) exportMethods( "getZ1", "setZ1<-", "publicA", "plot" ) exportClasses( "ClassY", "ClassZ" ) import(graphics) Christophe ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
