Visibility graph preparation functions¶

Submodule pyiomica.visibilityGraphAuxiliaryFunctions

Functions to generate adjacency matrix of visibility graphs

Functions:

`getAdjacencyMatrixOfNVG`(data, times)	Calculate adjacency matrix of visibility graph.
`getAdjacencyMatrixOfNVGbyNUMPY`(data, times)	Calculate adjacency matrix of visibility graph.
`getAdjacencyMatrixOfHVG`(data)	Calculate adjacency matrix of horizontal visibility graph.
`getAdjacencyMatrixOfHVGbyNUMPY`(data)	Calculate adjacency matrix of horizontal visibility graph.

getAdjacencyMatrixOfNVG(data, times)[source]¶

Calculate adjacency matrix of visibility graph. JIT-accelerated version (a bit faster than NumPy-accelerated version). Allows use of Multiple CPUs.

Parameters:

data: 2d numpy.array: Numpy array of floats
times: 1d numpy.array: Numpy array of floats

Returns:

2d numpy.array: Adjacency matrix

Usage:

A = getAdjacencyMatrixOfNVG(data, times)

getAdjacencyMatrixOfNVGbyNUMPY(data, times)[source]¶

Calculate adjacency matrix of visibility graph. NumPy-accelerated version. Somewhat slower than JIT-accelerated version. Use in serial applications.

Parameters:

data: 2d numpy.array: Numpy array of floats
times: 1d numpy.array: Numpy array of floats

Returns:

2d numpy.array: Adjacency matrix

Usage:

A = getAdjacencyMatrixOfNVGbyNUMPY(data, times)

getAdjacencyMatrixOfHVG(data)[source]¶

Calculate adjacency matrix of horizontal visibility graph. JIT-accelerated version (a bit faster than NumPy-accelerated version). Single-threaded beats NumPy up to 2k data sizes. Allows use of Multiple CPUs.

Parameters:

data: 2d numpy.array: Numpy array of floats

Returns:

2d numpy.array: Adjacency matrix

Usage:

A = getAdjacencyMatrixOfHVG(data)

getAdjacencyMatrixOfHVGbyNUMPY(data)[source]¶

Calculate adjacency matrix of horizontal visibility graph. NumPy-accelerated version. Use with datasets larger than 2k. Use in serial applications.

Parameters:

data: 2d numpy.array: Numpy array of floats

Returns:

2d numpy.array: Adjacency matrix

Usage:

A = getAdjacencyMatrixOfHVGbyNUMPY(data)