Produce a directed adjacency matrix with outward edges towards the k nearest neighbours, determined from the input affinity matrix.

Parameters:¶

matrix : ndarray[float64]¶

2D matrix of Particle affinities.

k : int¶

Number of nearest neighbours in result.

weighted : bool¶

If True edges weighted by affinity, if False edge is binary. Default is False.

self_loop : bool¶

If False will remove self-edges. Default is False.

row : bool¶

If True outward edges given by rows, if False cols. Default is True.

dtype : dtype-like, optional¶

Type of output. Must be floating point if weighted is True.

Returns:¶

adj – Adjacency matrix representing particle connectivity.

Return type:¶

ndarray[bool_] or ndarray[float64]

Notes

If weighted is False, the returned adjacency matrix will be boolean.