[Rd] class(x) <- error
John Chambers
jmc@research.bell-labs.com
Wed Feb 26 20:10:03 2003
The original report was correct.
I fixed the problem & had sent a message to r-devel to that effect, but
we may have been having delays or other problems with our mailer.
Thanks again for the report, Paul.
John Chambers
Ross Ihaka wrote:
>
> Paul Gilbert wrote:
> > I think this is an error in r-devel:
> >
> > R : Copyright 2003, The R Development Core Team
> > Version 1.7.0 Under development (unstable) (2003-02-25)
> > ...
> > > x <- matrix(1:9,3,3)
> > > class(x)<-c("a", "matrix")
> > > class(x)
> > [1] "a" "matrix"
> > > class(x)<-class(x)[-1]
> > > class(x)
> > [1] "a" "matrix" # should be "matrix"
> > > class(x)<-"matrix"
> > > class(x)
> > [1] "a" "matrix" # should be "matrix"
>
> As of this minute I am seeing the correct behaviour under RedHat 7.3 Linux.
>
> R : Copyright 2003, The R Development Core Team
> Version 1.7.0 Under development (unstable) (2003-02-26)
> ...
> > x <- matrix(1:9,3,3)
> > class(x)<-c("a", "matrix")
> > class(x)
> [1] "a" "matrix"
> > class(x)<-class(x)[-1]
> > class(x)
> [1] "matrix"
> > class(x)<-"matrix"
> > class(x)
> [1] "matrix"
>
> Have you redefined class<- somehow?
>
> --
> Ross Ihaka Email: ihaka@stat.auckland.ac.nz
> Department of Statistics Phone: (64-9) 373-7599 x 85054
> University of Auckland Fax: (64-9) 373-7018
> Private Bag 92019, Auckland
> New Zealand
>
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--
John M. Chambers jmc@bell-labs.com
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