There are three classes of sparse objects that are of interest to the user.
SparseMatrixA double precision sparse matrix class
SparseComplexMatrixA complex sparse matrix class
SparseBoolMatrixA boolean sparse matrix class
All of these classes inherit from the Sparse<T> template class, and so all have similar capabilities and usage. The Sparse<T> class was based on Octave’s Array<T> class and users familiar with Octave’s Array classes will be comfortable with the use of the sparse classes.
The sparse classes will not be entirely described in this section, due to their similarity with the existing Array classes. However, there are a few differences due the nature of sparse objects, and these will be described. First, although it is fundamentally possible to have N-dimensional sparse objects, the Octave sparse classes do not allow them at this time; All instances of the sparse classes must be 2-dimensional. This means that SparseMatrix is actually more similar to Octave’s Matrix class than it is to the NDArray class.
| • Array and Sparse Class Differences: |
| • Creating Sparse Matrices in Oct-Files: |
| • Using Sparse Matrices in Oct-Files: |
© 1996–2018 John W. Eaton
Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.
Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions.
https://octave.org/doc/interpreter/Sparse-Matrices-in-Oct_002dFiles.html