opts_sparseMatrix: Constructive options for class 'sparseMatrix'

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Constructive options for class 'sparseMatrix'

Description

These options will be used on objects of class 'sparseMatrix' from the 'Matrix' package in compressed column, compressed row or triplet form, i.e. objects of classes such as 'dgCMatrix', 'dgRMatrix', 'dgTMatrix', 'lgCMatrix', 'ngCMatrix', 'dsCMatrix' or 'dtCMatrix'.

Usage

opts_sparseMatrix(constructor = c("sparseMatrix", "next"), ...)

Arguments

constructor	String. Name of the function used to construct the object, see Details section.
...	Additional options used by user defined constructors through the opts object

Details

Depending on constructor, we construct the object as follows:

• "sparseMatrix" (default): We build the object using Matrix::sparseMatrix() on the (1-based) row and column indices of the stored entries. If this cannot reproduce the object exactly (e.g. cached factorizations, unit triangular matrices) we fall back to the next constructor.

• "next" : Use the constructor for the next supported class. Call .class2() on the object to see in which order the methods will be tried.

Value

An object of class <constructive_options/constructive_options_sparseMatrix>

constructive documentation built on Oct. 22, 2026, 5:07 p.m.