pymatgen.io.zeopp module

class ZeoCssr(structure)[source]

Bases: pymatgen.io.cssr.Cssr

ZeoCssr adds extra fields to CSSR sites to conform with Zeo++ input CSSR format. The coordinate system is rorated from xyz to zyx. This change aligns the pivot axis of pymatgen (z-axis) to pivot axis of Zeo++ (x-axis) for structurural modifications.

Parameters

structure – A structure to create ZeoCssr object

static from_file(filename)[source]

Reads a CSSR file to a ZeoCssr object.

Parameters

filename – Filename to read from.

Returns

ZeoCssr object.

static from_string(string)[source]

Reads a string representation to a ZeoCssr object.

Parameters

string – A string representation of a ZeoCSSR.

Returns

ZeoCssr object.

class ZeoVoronoiXYZ(mol)[source]

Bases: pymatgen.io.xyz.XYZ

Class to read Voronoi Nodes from XYZ file written by Zeo++. The sites have an additional column representing the voronoi node radius. The voronoi node radius is represented by the site property voronoi_radius.

Parameters

mol – Input molecule holding the voronoi node information

static from_file(filename)[source]

Creates XYZ object from a file.

Parameters

filename – XYZ filename

Returns

XYZ object

static from_string(contents)[source]

Creates Zeo++ Voronoi XYZ object from a string. from_string method of XYZ class is being redefined.

Parameters

contents – String representing Zeo++ Voronoi XYZ file.

Returns

ZeoVoronoiXYZ object

get_free_sphere_params(structure, rad_dict=None, probe_rad=0.1)[source]

Analyze the void space in the input structure using voronoi decomposition Calls Zeo++ for Voronoi decomposition.

Parameters
  • structure – pymatgen.core.structure.Structure

  • rad_dict (optional) – Dictionary of radii of elements in structure. If not given, Zeo++ default values are used. Note: Zeo++ uses atomic radii of elements. For ionic structures, pass rad_dict with ionic radii

  • probe_rad (optional) – Sampling probe radius in Angstroms. Default is 0.1 A

Returns

voronoi nodes as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure voronoi face centers as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure

get_high_accuracy_voronoi_nodes(structure, rad_dict, probe_rad=0.1)[source]

Analyze the void space in the input structure using high accuracy voronoi decomposition. Calls Zeo++ for Voronoi decomposition.

Parameters
  • structure – pymatgen.core.structure.Structure

  • rad_dict (optional) – Dictionary of radii of elements in structure. If not given, Zeo++ default values are used. Note: Zeo++ uses atomic radii of elements. For ionic structures, pass rad_dict with ionic radii

  • probe_rad (optional) – Sampling probe radius in Angstroms. Default is 0.1 A

Returns

voronoi nodes as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure voronoi face centers as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure

get_void_volume_surfarea(structure, rad_dict=None, chan_rad=0.3, probe_rad=0.1)[source]

Computes the volume and surface area of isolated void using Zeo++. Useful to compute the volume and surface area of vacant site.

Parameters
  • structure – pymatgen Structure containing vacancy

  • rad_dict (optional) – Dictionary with short name of elements and their radii.

  • chan_rad (optional) – Minimum channel Radius.

  • probe_rad (optional) – Probe radius for Monte Carlo sampling.

Returns

floating number representing the volume of void

Return type

volume

get_voronoi_nodes(structure, rad_dict=None, probe_rad=0.1)[source]

Analyze the void space in the input structure using voronoi decomposition Calls Zeo++ for Voronoi decomposition.

Parameters
  • structure – pymatgen.core.structure.Structure

  • rad_dict (optional) – Dictionary of radii of elements in structure. If not given, Zeo++ default values are used. Note: Zeo++ uses atomic radii of elements. For ionic structures, pass rad_dict with ionic radii

  • probe_rad (optional) – Sampling probe radius in Angstroms. Default is 0.1 A

Returns

voronoi nodes as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure voronoi face centers as pymatgen.core.structure.Strucutre within the unit cell defined by the lattice of input structure