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spam (version 0.15-2)

SPArse Matrix

Description

Set of function for sparse matrix algebra. Differences with SparseM/Matrix are: (1) we only support (essentially) one sparse matrix format, (2) based on transparent and simple structure(s), (3) tailored for MCMC calculations within GMRF. (4) S3 and S4 like-"compatible" ... and it is fast.

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Version

Install

install.packages('spam')

Monthly Downloads

103,846

Version

0.15-2

License

GPL | file LICENSE

Maintainer

Reinhard Furrer

Last Published

July 3rd, 2017

Functions in spam (0.15-2)

spam operations

Basic Linear Algebra for Sparse Matrices

Dimensions of an Object

Kronecker products on sparse matrices

Display a spam Object as Color Image

Adjacency structure of the counties in the contiguous United States

Cholesky Factorization for Sparse Matrices

Test if a spam matrix is Symmetric

Graphially represent the nonzero entries

Linear Equation Solving for Sparse Matrices

Options Settings

Calculate the determinant of a positive definite Sparse Matrix

Brief overview of the history

Spam internal and auxiliary functions

Printing and summarizing sparse matrices

Read external matrix formats

Mathematical functions

Monthly total precipitation (mm) for April 1948 in the contiguous United States

Extract the permutation

Sparse Matrix Class

Lower and Upper Triangular Part of a Sparse Matrix

Test if Two 'spam' Objects are (Nearly) Equal

Distance Matrix Computation

Small "ToDo" list

Sparse Matrix diagonals

Transform a spam format to triplets

Rounding of Numbers

spam.chol.NgPeyton-class

Class "spam.chol.NgPeyton"

Spam Version Information

Transformation to other sparse formats

Combine spam Matrices by Rows or Columns