xrf_explorer.server.spectra package

Submodules

xrf_explorer.server.spectra.spectra module

class ElementLines(element, excitation_energy_kev)

Bases: object

Computes fluorescence emission line energies and intensities for element.

gaussian_convolve(peak_energies: ndarray, peak_intensities: ndarray, x_kevs: ndarray | None = None, std: float = 0.01) → tuple[ndarray, ndarray]

Convolve line spectrum defined by peak_energies and peak_intensities with a Gaussian peak shape.

Parameters:

• peak_energies – peak energies of the element

• peak_intensities – peak intensities of the element

• x_kevs – pre-determined x values

• std – standard deviation of gaussian filter

get_average_global(data: ndarray) → list[float]

Computes the average of the raw data for each bin on the whole painting.

Parameters:

data – datacube containing the raw data

Returns:

list where the index is the channel number and the value is the average global intensity of that channel

get_average_selection(data_source: str, mask: ndarray) → list[float]

Computes the average of the raw data for each bin on the selected pixels.

Parameters:

• data_source – name of the data source to get the selection average from

• mask – The mask describing the selected pixels

Returns:

list where the index is the channel number and the value is the average intensity of that channel within the selection

get_element_spectrum(element: str, excitation_energy_kev: float, normalize: bool = True, x_kevs: ndarray | None = None, std: float = 0.01) → tuple[ndarray, ndarray, ndarray, ndarray] | ndarray

Compute simple excitation spectrum (no matrix effects) and peaks.

Parameters:

• element – symbol of the element

• excitation_energy_kev – excitation energy

• normalize – boolean representing whether to normalize y values

• x_kevs – pre-determined x values

• std – standard deviation of gaussian filter

Returns:

x values of the spectrum, y values of the spectrum, peak energies, peak intensities

get_theoretical_data(element: str, excitation_energy_kev: float, low: int, high: int, bin_size: int) → list

Get the theoretical spectrum and peaks of an element. Precondition: 0 <= low < high < 4096, 0 < bin_size <= 4096, 0 <=excitation_energy_kev <= 40

Parameters:

• element – symbol of the element

• excitation_energy_kev – excitation energy

• low – lower channel boundary

• high – higher channel boundary

• bin_size – size of each bin

Returns:

list with first element being a list of dictionaries representing the spectra points, second being a list of dictionaries representing the peaks

Module contents

This module handles everything related to the spectral chart.