README.md

In wrathematics/band: Banded Matrices

band

• Version: 0.1-0
• Status:
• License:
• Author: Drew Schmidt

An R package for packed matrix storage, including banded, symmetric, and diagonal matrices.

In addition to a few virtual classes, we offer the following S4 classes:

| Class | Description | |------------|------------- | | ZeroMat | A zero matrix. Only dimension information is stored. | | DiagMat | Diagonal matrices. Only the diagonal entries are stored. | | GenBandMat | A general band storage matrix. Only the band elements are stored. | | SymMat | Packed symmetric (not band) storage. Only one triangle (+ diagonal) is stored. |

The list of currently implemented methods is:

| Description | Functions | |-------------|---------- | | Casters | as.banded(), as.matrix(), as.symmetric() | | Checks | isSym() | | Transpose | xpose() |

Note that attempting to transpose a zero, diagonal, or symmetric matrix will produce an error because these are already their own transpose and there is no good reason to create a copy.

Finally, we include optimized versions of xpose() and isSym() for regular R matrices.

Installation

wrathematics/band documentation built on May 4, 2019, 9:48 a.m.