PAWpySeed
Parallel C/Python package for numerical analysis of PAW DFT wavefunctions
Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
pawpyseed.core.projector.Projector Class Reference
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Public Member Functions

def __init__ (self, wf, basis, unsym_basis=False, unsym_wf=False, pseudo=False)
 
def make_site_lists (self)
 
def setup_overlap (self)
 
def single_band_projection (self, band_num)
 
def proportion_conduction (self, band_num, spinpol=False)
 
def defect_band_analysis (self, num_below_ef=20, num_above_ef=20, spinpol=False, return_energies=False, return_energy_list=False, vbmband=None)
 
def free_all (self)
 
- Public Member Functions inherited from pawpyseed.core.wavefunction.Wavefunction
def __init__ (self, struct, pwf, cr, outcar, setup_projectors=False)
 
def get_c_projectors_from_pps (self, pps)
 
def make_c_projectors (self)
 
def check_c_projectors (self)
 
def get_state_realspace (self, b, k, s, dim=None)
 
def write_state_realspace (self, b, k, s, fileprefix="", dim=None, return_wf=False)
 
def write_density_realspace (self, filename="PYAECCAR", dim=None, return_wf=False)
 
def get_symmops (self, symprec)
 
def get_nosym_kpoints (self, init_kpts=None, symprec=1e-5, gen_trsym=True, fil_trsym=True)
 
def get_kpt_mapping (self, allkpts, symprec=1e-5, gen_trsym=True)
 
def kpts (self)
 
def kws (self)
 
def free_all (self)
 

Static Public Member Functions

def from_files (basis, struct="CONTCAR", pwf="WAVECAR", cr="POTCAR", vr="vasprun.xml", outcar="OUTCAR", unsym_basis=False, unsym_wf=False, pseudo=False)
 
def from_directory (basis, path, unsym_basis=False, unsym_wf=False, pseudo=False)
 
def setup_bases (basis_dirs, desymmetrize=True, atomate_compatible=True)
 
def setup_multiple_projections (basis_dir, wf_dirs, pseudo=False, ignore_errors=False, desymmetrize=False, atomate_compatible=True)
 
- Static Public Member Functions inherited from pawpyseed.core.wavefunction.Wavefunction
def from_files (struct="CONTCAR", pwf="WAVECAR", cr="POTCAR", vr="vasprun.xml", outcar="OUTCAR", setup_projectors=False)
 
def from_directory (path, setup_projectors=False)
 
def from_atomate_directory (path, setup_projectors=False)
 

Public Attributes

 structure
 
 pwf
 
 cr
 
 dim
 
 projector_owner
 
 projector_list
 
 nband
 
 nwk
 
 nspin
 
 nums
 
 coords
 
 basis
 
 wf
 
 encut
 
 num_proj_els
 
 freed
 
 pseudo
 
 site_cat
 
- Public Attributes inherited from pawpyseed.core.wavefunction.Wavefunction
 structure
 
 pwf
 
 cr
 
 dim
 
 projector_owner
 
 projector_list
 
 nums
 
 coords
 
 nband
 
 nwk
 
 nspin
 
 encut
 
 num_proj_els
 
 freed
 
 nosym_kpts
 
 orig_kptnums
 
 op_nums
 
 symmops
 

Constructor & Destructor Documentation

def pawpyseed.core.projector.Projector.__init__ (   self,
  wf,
  basis,
  unsym_basis = False,
  unsym_wf = False,
  pseudo = False 
)
Projector is a class to projector KS states
from wf onto the KS states of basis
(both wavefunction objects). Projector extends
Wavefunction, so a Projector is essentially
a Wavefunction object that is set up to be
projected onto basis.

Arguments:
    wf (Wavefunction): The wavefunction objects whose
bands are to be projected onto basis
    basis (Wavefunction): The wavefunction whose bands
serve as the basis set for projection
    unsym_basis (bool, False): If True, makes a copy
of basis in which the k-point mesh is not symmetrically
reduced, and then frees the original basis
    unsym_wf (bool, False): If True, makes a copy of
wf in which the k-point mesh is not symmetrically
reduced, and the frees the original wf
    pseudo (bool, False): Whether the perform projections
using only plane-wave coefficient components of the
wavefunctions. Sacrifices orthogonalization and
normalization for speed

Returns:
    Projector object, containing all the same fields as
wf but set up for projections onto basis

Member Function Documentation

def pawpyseed.core.projector.Projector.defect_band_analysis (   self,
  num_below_ef = 20,
  num_above_ef = 20,
  spinpol = False,
  return_energies = False,
  return_energy_list = False,
  vbmband = None 
)
Identifies a set of 'interesting' bands in a defect structure
to analyze by choosing any band that is more than bound conduction
and more than bound valence in the pseudoprojection scheme,
and then fully analyzing these bands using single_band_projection

Args:
    num_below_ef (int, 20): number of bands to analyze below the fermi level
    num_above_ef (int, 20): number of bands to analyze above the fermi level
    spinpol (bool, False): whether to return spin-polarized results (only allowed
for spin-polarized DFT output)
    TODO: energy and vbmband docs (need to clean up energy return vals)
def pawpyseed.core.projector.Projector.free_all (   self)
Frees all of the C structures associated with the Wavefunction object.
After being called, this object is not usable.
def pawpyseed.core.projector.Projector.from_directory (   basis,
  path,
  unsym_basis = False,
  unsym_wf = False,
  pseudo = False 
)
static
Assumes VASP output has the default filenames and is located
in the directory specificed by path.
Arguments:
    basis (Wavefunction): the basis Wavefunction
    path (str): path to the VASP calculation directory
    unsym_basis (bool, False): If True, makes a copy
of basis in which the k-point mesh is not symmetrically
reduced, and then frees the original basis
    unsym_wf (bool, False): If True, makes a copy of
wf in which the k-point mesh is not symmetrically
reduced, and the frees the original wf
    pseudo (bool, False): Whether the perform projections
using only plane-wave coefficient components of the
wavefunctions. Sacrifices orthogonalization and
normalization for speed

Returns:
    Projector object
def pawpyseed.core.projector.Projector.from_files (   basis,
  struct = "CONTCAR",
  pwf = "WAVECAR",
  cr = "POTCAR",
  vr = "vasprun.xml",
  outcar = "OUTCAR",
  unsym_basis = False,
  unsym_wf = False,
  pseudo = False 
)
static
Construct a Projector object from file paths.
Arguments:
    basis (Wavefunction): the basis Wavefunction
    struct (str): VASP POSCAR or CONTCAR file path
    pwf (str): VASP WAVECAR file path
    cr (str): VASP POTCAR file path
    vr (str): VASP vasprun file path
    outcar (str): VASP OUTCAR file path
    setup_basis (bool): whether to set up the basis
    unsym_basis (bool, False): If True, makes a copy
of basis in which the k-point mesh is not symmetrically
reduced, and then frees the original basis
    unsym_wf (bool, False): If True, makes a copy of
wf in which the k-point mesh is not symmetrically
reduced, and the frees the original wf
    pseudo (bool, False): Whether the perform projections
using only plane-wave coefficient components of the
wavefunctions. Sacrifices orthogonalization and
normalization for speed

Returns:
    Projector object
def pawpyseed.core.projector.Projector.make_site_lists (   self)
Organizes sites into sets for use in the projection scheme. M_R and M_S contain site indices
of sites which are identical in structures R (basis) and S (self). N_R and N_S contain all other
site indices, and N_RS contains pairs of indices in R and S with overlapping augmentation
spheres in the PAW formalism.

Returns:
    M_R (numpy array): Indices of sites in basis which have an identical site in
S (self) (same element and position to within tolerance of 0.02 Angstroms).
    M_S (numpy array): Indices of sites in self which match sites in M_R
(i.e. M_R[i] is an identical site to M_S[i])
    N_R (numpy array): Indices of sites in basis but not in M_R
    N_S (numpy array): Indices of sites in self but not in M_S
    N_RS (numpy array): Pairs of indices (one in basis and one in self) which
are not identical but have overlapping augmentation regions
def pawpyseed.core.projector.Projector.proportion_conduction (   self,
  band_num,
  spinpol = False 
)
Calculates the proportion of band band_num in self
that projects onto the valence states and conduction
states of self.basis (should be the bulk structure).
Designed for analysis of point defect
wavefunctions.

Arguments:
    band_num (int): number of defect bands in self
    spinpol (bool, False): whether to return separate
values of the projection for spin up and spin down

Returns:
    v, c (int, int): The valence (v) and conduction (c)
proportion of band band_num
def pawpyseed.core.projector.Projector.setup_bases (   basis_dirs,
  desymmetrize = True,
  atomate_compatible = True 
)
static
This function performs the setup of all the bases in the basis_dirs.
After this function is called, pass the returned projector_list
each time you call Projector with one of the wavefunctions in the
basis_dirs list. Free projector_list after you are fully finished
using the wavefunctions in basis_dirs for projections.

Arguments:
    basis_dir (str): paths to the VASP outputs
to be used as the basis structures
    desymmetrize (bool, False): If True, constructs
Wavefunction objects in which the k-point mesh
is not symmetrically reduced
    atomate_compatible (bool, True): If True, checks for the gzipped
files created the atomate workflow tools and reads the most
recent run based on title

Returns:
    list of Wavefunction objects, each basis in the same
order as the basis_dirs list
def pawpyseed.core.projector.Projector.setup_multiple_projections (   basis_dir,
  wf_dirs,
  pseudo = False,
  ignore_errors = False,
  desymmetrize = False,
  atomate_compatible = True 
)
static
A convenient generator function for processing the Kohn-Sham wavefunctions
of multiple structures with respect to one structure used as the basis.
All C memory is freed after each yield for the wavefunctions to be analyzed,
and C memory associated with the basis wavefunction is freed when
the generator is called after all wavefunctions have been yielded.

Args:
    basis_dir (str): path to the VASP output to be used as the basis structure
    wf_dirs (list of str): paths to the VASP outputs to be analyzed
    ignore_errors (bool, False): whether to ignore errors in setting up
Wavefunction objects by skipping over the directories for which
setup fails.
    desymmetrize (bool, False): If True, constructs
Wavefunction objects in which the k-point mesh
is not symmetrically reduced
    atomate_compatible (bool, True): If True, checks for the gzipped
files created the atomate workflow tools and reads the most
recent run based on title

Returns:
    list -- wf_dir, basis, wf
    Each iteration of the generator function returns a directory name from
    wf_dirs (wf_dir), the basis Wavefunction object (basis), and the Wavefunction
    object associated with wf_dir (wf), fully setup to project bands of wf
    onto bands of basis.
def pawpyseed.core.projector.Projector.setup_overlap (   self)
Evaluates projectors <p_i|psi>, as well
as <(phi-phit)|psi> and <(phi_i-phit_i)|(phi_j-phit_j)>,
when needed
def pawpyseed.core.projector.Projector.single_band_projection (   self,
  band_num 
)
All electron projection of the band_num band of self
onto all the bands of basis. Returned as a numpy array,
with the overlap operator matrix elements ordered as follows:
loop over band
    loop over spin
loop over kpoint

Arguments:
    band_num (int): band which is projected onto basis

Returns:
    res (np.array): overlap operator expectation values
as described above

Member Data Documentation

pawpyseed.core.projector.Projector.basis
pawpyseed.core.projector.Projector.coords
pawpyseed.core.projector.Projector.cr
pawpyseed.core.projector.Projector.dim
pawpyseed.core.projector.Projector.encut
pawpyseed.core.projector.Projector.freed
pawpyseed.core.projector.Projector.nband
pawpyseed.core.projector.Projector.nspin
pawpyseed.core.projector.Projector.num_proj_els
pawpyseed.core.projector.Projector.nums
pawpyseed.core.projector.Projector.nwk
pawpyseed.core.projector.Projector.projector_list
pawpyseed.core.projector.Projector.projector_owner
pawpyseed.core.projector.Projector.pseudo
pawpyseed.core.projector.Projector.pwf
pawpyseed.core.projector.Projector.site_cat
pawpyseed.core.projector.Projector.structure
pawpyseed.core.projector.Projector.wf

The documentation for this class was generated from the following file: