[Rd] setGeneric?

[Roger Koenker]

John,

I updated to the current R-patched and now SparseM_0.27 seems to be fine.  The
reports I had received complained about:

> >  R CMD INSTALL SparseM_0.27.tar.gz -l /usr/local/r-cran/
> > dies with:
> > [1] "summary.slm"
> > Error in setGeneric("as.matrix.csr") : Must supply a function skeleton, explicitly or via
an existing function
> > Execution halted

but it looks fine with the original version of SparseM now...so either this was something
machine specific -- or something that only arose in some intermediate version of R-patched.

Thanks for looking at it,

Roger

url:	www.econ.uiuc.edu	Roger Koenker		Dept. of Economics UCL,
email	rkoenker at uiuc.edu	Department of Economics Drayton House,
vox: 	217-333-4558		University of Illinois	30 Gordon St,
fax:   	217-244-6678		Champaign, IL 61820	London,WC1H 0AX, UK
							vox:	020-7679-5838

On Tue, 27 May 2003, John Chambers wrote:

> Hmm.  Unfortunately (perhaps) it seems to work for me, with the current
> R-patched and with the 0.27 version of SparseM from CRAN, I could
> install and also run CMD check w/o error.
>
> (This has the simpler version , setGeneric("as.matrix.csr"), which would
> seem to me to be what you want.)
>
> Could you try again, and send me the SparseM.Rcheck/SparseM-Ex.Rout*
> files if it still fails?
>
> Thanks,
>  John
>
> Roger Koenker wrote:
> >
> > In the last few days I've received  couple of messages pointing out that our SparseM
> > package fails to install on the patched version of 1.7.0.  Laurent Gaultier kindly
> > suggested that replacing:
> >
> > setGeneric("as.matrix.csr")
> >
> > by
> >
> > setGeneric("as.matrix.csr", function(x, nrow, ncol, eps) standardGeneric("as.matrix.csr"))
> >
> > was sufficient to fix the problem.  Unfortunately, the story is a bit more complicated
> > than that.  After this substitution and some similar ones for a few other setGeneric()
> > calls, the package fails R CMD check in the examples --
> > from the end of SparseM.Rcheck-Ex/SparseM.Rout:
> >
> > > image(as.matrix.csr(A)%*%as.matrix.csr(t(B)))
> > Error in str(eps) : Argument "eps" is missing, with no default
> > Execution halted
> >
> > This is the beginning of the function as.matrix.csr.  The cat(str(eps)) is there just
> > for debugging purposes, but it is quite mysterious to me how eps can be considered
> > missing with no default.  I tried without success to construct a simpler example of
> > this phenomena.  I would, as always, be  very grateful for any suggestions.
> >
> > "as.matrix.csr" <-
> > function(x, nrow = 1, ncol = 1, eps = .Machine$double.eps){
> >          cat(str(eps))
> >          if(is.matrix.csr(x)) {x; return(x)}
> >          if (!is.matrix(x)) {
> >                         ..........
> >
> > Roger
> >
> > PS.  While I'm at it I might as well inquire why the def argument of setGeneric is
> > now needed since my reading of the its documentation suggests that it isn't needed
> > in the present circumstances.
> >
> > url:    www.econ.uiuc.edu       Roger Koenker           Dept. of Economics UCL,
> > email   rkoenker at uiuc.edu       Department of Economics Drayton House,
> > vox:    217-333-4558            University of Illinois  30 Gordon St,
> > fax:    217-244-6678            Champaign, IL 61820     London,WC1H 0AX, UK
> >                                                         vox:    020-7679-5838
> >
> > ______________________________________________
> > R-devel at stat.math.ethz.ch mailing list
> > https://www.stat.math.ethz.ch/mailman/listinfo/r-devel
>
> --
> John M. Chambers                  jmc at bell-labs.com
> Bell Labs, Lucent Technologies    office: (908)582-2681
> 700 Mountain Avenue, Room 2C-282  fax:    (908)582-3340
> Murray Hill, NJ  07974            web: http://www.cs.bell-labs.com/~jmc
>