Julia包读取MatrixMarket文件格式_Julia_下载.zip

# MatrixMarket [](https://travis-ci.org/JuliaSparse/MatrixMarket.jl) Package to read/write matrices from/to files in the [Matrix Market native exchange format](http://math.nist.gov/MatrixMarket/formats.html#MMformat). The [Matrix Market](http://math.nist.gov/MatrixMarket/) is a NIST repository of "test data for use in comparative studies of algorithms for numerical linear algebra, featuring nearly 500 sparse matrices from a variety of applications, as well as matrix generation tools and services." Over time, the [Matrix Market's native exchange format](http://math.nist.gov/MatrixMarket/formats.html#MMformat) has become one of the _de facto_ standard file formats for exchanging matrix data. ## Usage ### Read using MatrixMarket M = MatrixMarket.mmread("myfile.mtx") `M` will be a sparse or dense matrix depending on whether the file contains a matrix in coordinate format or array format. The specific type of `M` may be `Symmetric` or `Hermitian` depending on the symmetry information contained in the file header. MatrixMarket.mmread("myfile.mtx", true) Returns raw data from the file header. Does not read in the actual matrix elements. ### Write MatrixMarket.mmwrite("myfile.mtx", M) `M` has to be a sparse matrix.