trident.spectrum_generator.SpectrumGenerator.add_noise_vector

SpectrumGenerator.add_noise_vector(noise)

Add an array of noise to the spectrum.

Parameters

Noise

array of floats

The array of noise values to be added to the spectrum. This array must be of the same size as the flux array.

Example

>>> import numpy as np
>>> import trident
>>> ray = trident.make_onezone_ray(column_densities={'H_p0_number_density':1e21})
>>> sg = trident.SpectrumGenerator(lambda_min=1200, lambda_max=1300, dlambda=0.1)
>>> sg.make_spectrum(ray, lines=['Ly a'])
>>> my_noise = np.random.normal(loc=0.0, scale=0.1, size=sg.flux_field.size)
>>> sg.add_noise_vector(my_noise)
>>> sg.plot_spectrum('spec_noise.png')