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TRANSFORM > INCIDENCE
PURPOSE Convert an adjacency matrix to an incidence matrix.
DESCRIPTION An incidence matrix is a node by edge matrix. The rows represent the nodes of a graph and the columns the edges. A one in row i column j indicates that node i is incident to edge j. This representation is often called the hypergraph representation.
PARAMETERS
Input dataset:
Name of file containing adjacency matrix. Data type: Digraph
Treat data as directed: (Default=No)
If Yes then reciprocal ties will occur twice in an incidence matrix.
Include self loops: (Default = No)
If No self loop ties will be ignored.
Output Filename: (Default = 'Incidence')
Name of data file which will contain incidence matrix. The columns will be labeled with edge labels.
LOG FILE Labeled incidence matrix.
TIMING O(N^2).
COMMENTS None.
REFERENCES None.