Coordinate Format

A file format suitable for representing general sparse matrices. Only nonzero entries are

Array Format

A file format suitable for representing general dense matrices. All entries are provided in

Several instances of each of these basic formats are defined. These are obtained by specifying size of the data file $($i$.$e$.$ general, symmetric, skew$-$symmetric, Hermitian$)$ by storing nonzero en

MM coordinate format is suitable for representing sparse matrices. Only nonzero entries need sparse matrix.

$\backslash$table$[[1,0,0,6,0],[0,10\mathrm{.}5,0,0,0],[0,0,\mathrm{.}015,0,0],[0,250\mathrm{.}5,0,-280,33\mathrm{.}32],[0,0,0,0,12]]$

In MM coordinate format this could be represented as follows.

$8.$MatrixMarket matrix coordinate real general

Indices are $1-$based, i$.$e$.A(1,1)$ is the first element.

$5,58$

$\backslash$table$[[1,1,1\mathrm{.}000e+00//////$this is matrix market exchange formats for my projects will implement a parallel matrix vector multiplication using mpi and need to use matrix market fotmat for my matrices but dont understand format could you first explain format and give an example and show output