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from enum import Enum | ||
from typing import Dict, List, Optional, Tuple | ||
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import numpy as np | ||
from pydantic import BaseModel, Field, root_validator | ||
from pymatgen.analysis.diffraction.xrd import WAVELENGTHS, XRDCalculator | ||
from pymatgen.core.periodic_table import Element | ||
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from emmet.core.spectrum import SpectrumDoc | ||
from emmet.core.utils import ValueEnum, jsanitize | ||
from emmet.stubs import DiffractionPattern, Structure | ||
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class Edge(ValueEnum): | ||
K_Alpha = "Ka" | ||
K_Alpha1 = "Ka1" | ||
K_Alpha2 = "Ka2" | ||
K_Beta = "Kb" | ||
K_Beta1 = "Kb1" | ||
K_Beta2 = "Kb2" | ||
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class XRDDoc(SpectrumDoc): | ||
""" | ||
Document describing a XRD Diffraction Pattern | ||
""" | ||
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spectrum: DiffractionPattern | ||
min_two_theta: float | ||
max_two_theta: float | ||
wavelength: float = Field(..., description="Wavelength for the diffraction source") | ||
target: Element = Field( | ||
None, description="Target element for the diffraction source" | ||
) | ||
edge: Edge = Field(None, description="Atomic edge for the diffraction source") | ||
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@root_validator(pre=True) | ||
def get_target_and_edge(cls, values: Dict): | ||
print("Validations") | ||
# Only do this if neither target not edge is defined | ||
if "target" not in values and "edge" not in values: | ||
print("Are we even getting here?") | ||
try: | ||
pymatgen_wavelength = next( | ||
k | ||
for k, v in WAVELENGTHS.items() | ||
if np.allclose(values["wavelength"], v) | ||
) | ||
values["target"] = pymatgen_wavelength[:2] | ||
values["edge"] = pymatgen_wavelength[2:] | ||
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except Exception: | ||
return values | ||
return values | ||
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@classmethod | ||
def from_structure( | ||
cls, | ||
material_id: str, | ||
spectrum_id: str, | ||
structure: Structure, | ||
wavelength: float, | ||
min_two_theta=0, | ||
max_two_theta=180, | ||
symprec=0.1, | ||
**kwargs, | ||
) -> "XRDDoc": | ||
calc = XRDCalculator(wavelength=wavelength, symprec=symprec) | ||
pattern = calc.get_pattern( | ||
structure, two_theta_range=(min_two_theta, max_two_theta) | ||
) | ||
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return super().from_structure( | ||
material_id=material_id, | ||
spectrum_id=spectrum_id, | ||
structure=structure, | ||
spectrum=pattern, | ||
wavelength=wavelength, | ||
min_two_theta=min_two_theta, | ||
max_two_theta=max_two_theta, | ||
**kwargs, | ||
) | ||
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@classmethod | ||
def from_target( | ||
cls, | ||
material_id: str, | ||
structure: Structure, | ||
target: Element, | ||
edge: Edge, | ||
min_two_theta=0, | ||
max_two_theta=180, | ||
symprec=0.1, | ||
**kwargs, | ||
) -> "XRDDoc": | ||
if f"{target}{edge}" not in WAVELENGTHS: | ||
raise ValueError(f"{target}{edge} not in pymatgen wavelenghts dictionarty") | ||
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wavelength = WAVELENGTHS[f"{target}{edge}"] | ||
spectrum_id = f"{material_id}-{target}{edge}" | ||
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return cls.from_structure( | ||
material_id=material_id, | ||
spectrum_id=spectrum_id, | ||
structure=structure, | ||
wavelength=wavelength, | ||
target=target, | ||
edge=edge, | ||
min_two_theta=min_two_theta, | ||
max_two_theta=max_two_theta, | ||
**kwargs, | ||
) |