https://github.com/alugowski/fast_matrix_market

Fast and full-featured Matrix Market I/O library for C++, Python, and R
https://github.com/alugowski/fast_matrix_market

blaze cpp csparse eigen-library eigen3 graphblas matrix-market matrix-market-format parallel parser python r sparse-matrix threaded

Last synced: 5 days ago
JSON representation

Fast and full-featured Matrix Market I/O library for C++, Python, and R

• Host: GitHub
• URL: https://github.com/alugowski/fast_matrix_market
• Owner: alugowski
• License: bsd-2-clause
• Created: 2023-01-10T06:38:53.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2024-08-05T11:23:50.000Z (3 months ago)
• Last Synced: 2024-10-11T12:41:08.423Z (27 days ago)
• Topics: blaze, cpp, csparse, eigen-library, eigen3, graphblas, matrix-market, matrix-market-format, parallel, parser, python, r, sparse-matrix, threaded
• Language: C++
• Homepage:
• Size: 863 KB
• Stars: 73
• Watchers: 5
• Forks: 7
• Open Issues: 7
• Metadata Files:
  • Readme: README.Armadillo.md
  • License: LICENSE.txt
  • Citation: CITATION.cff

Awesome Lists containing this project

README

        
# Armadillo Matrix Market

`fast_matrix_market` provides read/write methods for [Armadillo](https://arma.sourceforge.net/) sparse and dense matrices.

# Usage

```c++

#include 

```

```c++

arma::Mat A;

// or

arma::SpMat A;

```

Not restricted to `double` matrices. Any type supported by Armadillo that makes sense in Matrix Market is also supported, such as `int64_t`, `float`, `std::complex`, etc.

### Reading

```c++

std::ifstream f("input.mtx");

fast_matrix_market::read_matrix_market_arma(f, A);

```

**Note:** Armadillo versions older than 10.5 [did not zero-initialize memory](https://arma.sourceforge.net/docs.html#changelog).

On those versions reading any Matrix Market file into a dense `arma::Mat` is not supported.

### Writing

```c++

std::ofstream f("output.mtx", std::ios_base::binary);

fast_matrix_market::write_matrix_market_arma(f, A);

```