Re: sparse matrices

[Dirk Eddelbuettel]

I vaguely recalled that GNU R had something by Roger Koenker (who does some
really neat stuff with quantile regression; I guess sparse matrices come in
handy there), and indeed. 

See http://cran.r-project.org/src/contrib/PACKAGES.html#SparseM
which shows:

SparseM: Sparse Linear Algebra

    Basic linear algebra for sparse matrices
    Version: 0.34
    Depends: methods
    Author: Roger Koenker <address@hidden> and Pin Ng <address@hidden>
    Maintainer: Roger Koenker <address@hidden>
    License: GPL (version 2 or later)
    URL: http://www.econ.uiuc.edu/~roger/research/sparse/sparse.html
    Index of Contents (Text)
    Reference Manual (PDF)
                    

Note that I have not used this or even looked at it.

Dirk

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