rustworkx.PyDAG.from_adjacency_matrix#

static PyDAG.from_adjacency_matrix(matrix, /, null_value=0.0)#

Create a new PyDiGraph object from an adjacency matrix with matrix elements of type float

This method can be used to construct a new PyDiGraph object from an input adjacency matrix. The node weights will be the index from the matrix. The edge weights will be a float value of the value from the matrix.

This differs from the from_complex_adjacency_matrix() in that the type of the elements of input matrix must be a float (specifically a numpy.float64) and the output graph edge weights will be float too. While in from_complex_adjacency_matrix() the matrix elements are of type complex (specifically numpy.complex128) and the edge weights in the output graph will be complex too.

Parameters:

  • matrix (ndarray) – The input numpy array adjacency matrix to create a new PyDiGraph object from. It must be a 2 dimensional array and be a float/np.float64 data type.

  • null_value (float) – An optional float that will treated as a null value. If any element in the input matrix is this value it will be treated as not an edge. By default this is 0.0

Returns:

A new graph object generated from the adjacency matrix

Return type:

PyDiGraph