[R] read.matrix.csr bug (e1071)?
roger koenker
rkoenker at uiuc.edu
Fri Jan 28 16:35:59 CET 2005
Don't you want read.matrix.csr not read.matrix?
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoenker at uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Jan 28, 2005, at 9:22 AM, Jeszenszky Peter wrote:
> Hello,
>
> I would like to read and write sparse matrices using the
> functions write.matrix.csr() and read.matrix.csr()
> of the package e1071. Writing is OK but reading back the
> matrix fails:
>
> x <- rnorm(100)
> m <- matrix(x, 10)
> m[m < 0.5] <- 0
> m.csr <- as.matrix.csr(m)
> write.matrix.csr(m, "sparse.dat")
> read.matrix("sparse.dat")
>
> Error in initialize(value, ...) : Can't use object of class "integer"
> in new(): Class "matrix.csr" does not extend that class
>
> Is something wrong with the code above or it must be
> considered as a bug?
>
> Best regards,
>
> Peter
>
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