31 lines
825 B
Python
31 lines
825 B
Python
import numpy as np
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def load_spectrum(spectrum_path,
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lambda_min=0,
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lambda_max=np.inf,
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delimiter=','):
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"""
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Load a spectrum file.
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Parameters
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----------
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spectrum_path : string
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File path.
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lambda_min : scalar, optional
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Cut the data at this minimum wavelength in nm.
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lambda_max : scalar, optional
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Cut the data at this maximum wavelength in nm.
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delimiter : string, optional
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Delimiter between columns in the datafile.
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Returns
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-------
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values : arrays
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(lamdbas, intensities)
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"""
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data = np.loadtxt(spectrum_path, delimiter=delimiter)
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lambdas, intensities = np.column_stack(data)
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mask = (lambdas > lambda_min) & (lambdas < lambda_max)
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return lambdas[mask], intensities[mask]
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