30 lines
1.2 KiB
Python
30 lines
1.2 KiB
Python
from ..target.ATarget import ATarget
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from ..SpectralQty import SpectralQty
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import astropy.units as u
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class FileTarget(ATarget):
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"""
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A class to create a target from a file containing the spectral flux densities
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"""
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@u.quantity_input(wl_bins="length")
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def __init__(self, file: str, wl_bins: u.Quantity):
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"""
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Initialize a new target from a file containing the spectral flux density values
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Parameters
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----------
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file : str
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The file to read the spectral flux density values from. The file needs to provide two columns: wavelength
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and the corresponding spectral flux density. The format of the file will be guessed by
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`astropy.io.ascii.read(). If the file doesn't provide units via astropy's enhanced CSV format, the units
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will be read from the column headers or otherwise assumed to be *nm* and *W / m^2 / nm*.
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wl_bins : length-Quantity
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Wavelengths used for binning
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"""
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# Create spectral quantity from file
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sfd = SpectralQty.fromFile(file, u.nm, u.W / (u.m ** 2 * u.nm))
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# Initialize the super class
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super().__init__(sfd, wl_bins)
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