Re: [Rd] Matrix / SparseM conflict (PR#8618)

From: <ripley_at_stats.ox.ac.uk>
Date: Mon 20 Feb 2006 - 14:07:54 GMT


Both are contributed packages. The R-bugs repository is for bugs in R, not for contributed packages, as clearly stated in the R FAQ.

   Finally, check carefully whether the bug is with R, or a contributed    package. Bug reports on contributed packages should be sent first to    the package maintainer, and only submitted to the R-bugs repository by    package maintainers, mentioning the package in the subject line.

Please contact the maintainers. (It looks to me as if the problem is in SparseM, so you could try loading it first.)

On Mon, 20 Feb 2006, dpleydel@univ-fcomte.fr wrote:

> Full_Name: David Pleydell
> Version: 2.2.1
> OS: Debian Etch
> Submission from: (NULL) (193.55.70.206)
>
>
> There appears to be a conflict between the chol functions from the Matrix and
> the SparseM packages. chol() can only be applied to a matrix of class dspMatrix
> if SparseM is not in the path.
>
> with gratitude
> David
>
>
>> library(Matrix)
>> sm <- as(as(Matrix(diag(5) + 1), "dsyMatrix"), "dspMatrix")
>> chol(sm)
> 5 x 5 Matrix of class "pCholesky"
> [,1] [,2] [,3] [,4] [,5]
> [1,] 1.4142136 0.7071068 0.7071068 0.7071068 0.7071068
> [2,] . 1.2247449 0.4082483 0.4082483 0.4082483
> [3,] . . 1.1547005 0.2886751 0.2886751
> [4,] . . . 1.1180340 0.2236068
> [5,] . . . . 1.0954451
>>
>> library(SparseM)
> [1] "SparseM library loaded"
>> chol(sm)
> Error in chol(sm) : no applicable method for "chol"
>>
>> detach("package:SparseM")
>> chol(sm)
> 5 x 5 Matrix of class "pCholesky"
> [,1] [,2] [,3] [,4] [,5]
> [1,] 1.4142136 0.7071068 0.7071068 0.7071068 0.7071068
> [2,] . 1.2247449 0.4082483 0.4082483 0.4082483
> [3,] . . 1.1547005 0.2886751 0.2886751
> [4,] . . . 1.1180340 0.2236068
> [5,] . . . . 1.0954451
>>
>
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>
>

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
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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Received on Tue Feb 21 01:10:16 2006

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