3/2/2023 0 Comments Array formatter![]() ![]() Size of the data: symmetric, skew-symmetric and Hermitian. Additional variants areĭefined for cases in which symmetries can be used to significantly reduce the Pattern, respectively, on the header line). Integer entries, as well as for those in which only the position of the nonzeroĮntries is prescribed (pattern matrices). Variants of the coordinate format are defined for matrices with complex and That the matrix format is not taking advantage of any symmetry properties.) Object being represented is a matrix in coordinate format and that the numericĭata following is real and represented in general form. % |% comments | |- 0 or more comment lines % |%%MatrixMarket matrix coordinate real general | <- header line % nonzeros in the following Matrix Market format: % This ASCII file represents a sparse MxN matrix with L %%MatrixMarket matrix coordinate real general In MM coordinate format this could be represented as follows. This is illustrated in the following example of a real Only nonzero entries need be encoded, and the coordinates of each are MM coordinate format is suitable for representing sparse matrices. Hermitian) by storing nonzero entries only on or below the main diagonal. (i.e., real, complex, integer, pattern) and a symmetry structure which may These are obtained by specifying an arithmetic field for the matrix entries Several instances of each of these basic formats are defined. This is illustrated in the example below.Ī file format suitable for representing general dense matrices.Īll entries are provided in a pre-defined (column-oriented) order. Only nonzero entries are provided, and the coordinates of each Initial specification, two matrix formats are defined.Ī file format suitable for representing general sparse matrices. ![]() Really a collection of affiliated formats which share design elements. To define a minimal base ASCII file format which can be very easily explainedĪnd parsed, but can easily adapted to applications with a more rigid structure, The Matrix Market (MM) exchange formats provide a simple mechanism toįacilitate the exchange of matrix data. The Matrix Market Formats: Initial Design We provide only a brief overview of this format on this page a complete This is the native exchange format for the Matrix Market. Refer to our compression document if you need Note that most of the data files we distribute are compressed using gzip,Īnd some are multifile archives based on Unix tar.
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