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Postprocessing for spectra #213

@matthewcarbone

Description

@matthewcarbone

Objective is to define functions that extract useful information from completed jobs.

def extract_FEFF(path: str) -> dict

where the output dictionary can have keys like "spectra", "corehole energy", etc.

For FEFF it's really easy. Something like this:

def extract_FEFF(path):
    # NOT QUITE THIS SIMPLE!!!
    return {"spectra": np.loadtxt(path / "xmu.dat"), "fermi_level": ...}

As an example of extracting VASP spectra:

grep "IMAGINARY DIELECTRIC FUNCTION" OUTCAR -A 40002 > mu.txt

We want to do one of these for each of the codes:

  • FEFF (priority)
  • VASP (secondary)
  • XSpectra
  • OCEAN
  • EXCITING

We'll put these in lightshow/postprocess/extract.py (directory should already exist).

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