mm2gv (1) - Linux Man Pages
mm2gv: Matrix Market-DOT converters
mm2gv - Matrix Market-DOT converters
SYNOPSISmm2gv [ -cluv? ] [ -Ui ] [ -ooutfile ] [ file ]
DESCRIPTIONmm2gv converts a sparse matrix of the Matrix Market format to a graph in the GV (formerly DOT) format. If the matrix M is not square, the graph is considered bipartite and the matrix is viewed as a bipartite graph adjacency matrix, with the rows and columns of the matrix specifying the two sets of vertices. Equivalently, the matrix is converted into a symmetric square matrix
|$M sup T$||0|
For a square matrix, mm2gv uses it directly as an adjacency matrix if its pattern of non-zero entries is symmetric; otherwise, it will treat it as a bipartite graph as with the case of non-square matrices. This behavior can be modified by the -U flag.
OPTIONSThe following options are supported:
- This flag causes mm2gv to assign colors to the edges. The matrix element is scaled to the range [0,1] depending on where it lies between the minimum and maximum set matrix values. This scaled value is used as the "wt" attribute of the corresponding edge. In addition, this scalar value is mapped to an RGB value, which is stored as the edge "color".
- If set, mm2gv attaches a label to the graph indicating the base name of the input file, and the number of nodes and edges.
- If specified, the graph is assumed to be undirected. By default, the graph generated is directed.
- This flag causes mm2gv to store the matrix values as the "len" attribute of the corresponding edge.
- Specifies how square matrices are handled. If bflag is 0, a square matrix will always be treated as an adjacency matrix. If bflag is 1 (the default), a square matrix with a symmetric pattern of non-zero entries will be used as an adjacency matrix; otherwise, it will be used a bipartite graph. If bflag is 2, a symmetric matrix will be used as an adjacency matrix; otherwise, it will be used a bipartite graph. If bflag is 3, any input matrix will be treated like a bipartite graph.
- Prints output to the file outfile. If not given, mm2gv uses stdout.
- Name of the file in MatrixMarket format. If no file operand is specified, the standard input will be used.
RETURN CODESReturn 0 if there were no problems during conversion; and non-zero if any error occurred.
AUTHORSYifan Hu <yifanhu [at] yahoo.com>
Emden R. Gansner <erg [at] graphviz.com>
ADDITIONAL INFOSee http://math.nist.gov/MatrixMarket/ for description of the format and http://www.cise.ufl.edu/research/sparse/matrices/ for a large collection of sparse matrices in this format.