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spam (version 0.15-3)

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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Install

install.packages('spam')

Monthly Downloads

103,846

Version

0.15-3

License

GPL | file LICENSE

Maintainer

Reinhard Furrer

Last Published

July 3rd, 2017

Functions in spam (0.15-3)

Transformation to other sparse formats

Dimensions of an Object

Cholesky Factorization for Sparse Matrices

Read external matrix formats

Adjacency structure of the counties in the contiguous United States

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

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

SPArse Matrix Package

Spam Version Information

Transform a spam format to triplets

Sparse Matrix diagonals

Graphially represent the nonzero entries

Display a spam Object as Color Image

Calculate the determinant of a positive definite Sparse Matrix

Small "ToDo" list

Kronecker products on sparse matrices

Distance Matrix Computation

Rounding of Numbers

spam.chol.NgPeyton-class

Class "spam.chol.NgPeyton"

Linear Equation Solving for Sparse Matrices

Mathematical functions

Spam internal and auxiliary functions

Brief overview of the history

Lower and Upper Triangular Part of a Sparse Matrix

Options Settings

Test if a spam matrix is Symmetric

Printing and summarizing sparse matrices

spam operations

Basic Linear Algebra for Sparse Matrices

Extract the permutation

Combine spam Matrices by Rows or Columns