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Welcome to Matrix Methods and Classes project!

R package Matrix provides a hierarchy of matrix classes, both dense & sparse. Numerous methods & operations on these matrices using BLAS & Lapack; further CHOLMOD and other libraries from the SuiteSparse collection. // The R-forge project description (pulled above) is limited to 255 characters // (in theory; in practice even a bit less). // Currently it shows this: // R package Matrix provides a hierarchy of matrix classes, both dense & sparse. Numerous methods & operations on these matrices using BLAS & Lapack; further CHOLMOD and other libraries from the SuiteSparse collection.

Matrix has been a "recommended" R package since R version 2.9.0 (October 2008). This means that it is now part of every regular installation of R.

The Matrix package comes with several vignettes describing its functionality. In addition, we provide slides of presentations or talks about the subject.

Doxygen documentation of the underlying C functions is here.

Do read on compatibility changes in connection with Matrix.

The project summary page is here.