LinearSpectralModelling

Framework for building a spectral library and performing linear spectral modelling on planetary surface spectra

Add a new laboratory spectra to the library

To add a new spectrum to the spectral library, first create a LibrarySpectrum class object with the information about the spectra. Then use the save method to add your spectrum to the library.

import numpy as np
import pandas as pd
from SpectralLibrary import spectral_library_utils as lib

filenm = 'example_library.hdf5' #spectral library file

data = np.loadtxt('Examples/NaCl_80K.txt', skiprows=4)
spec = lib.LibrarySpectrum(name = 'sodium chloride'
                           ,chemical_formula = 'NaCl'
                           ,temp = 80. #K
                           ,grain_size = np.array([20,50])
                           ,spec_type = 'lab'
                           ,hydration = 0 #anhydrous
                           ,spec_features = np.array([]) #empty if no features of note
                           ,source = 'https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2F2013JE004565&file=jgre20327-sup-0014-dataSetS13.txt'
                           ,citation = 'Hanley et al (2014)'
                           ,wavelength = data[:,0] #um
                           ,albedo = data[:,1]
                           )
spec.save('Examples/'+filenm) #overwrite=True only if you want to replace an existing object with the same name

Read in spectral library to pandas dataframe

df = lib.load_dataframe(filenm)
df

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	name	chemical_formula	temp	grain_size	spec_type	hydration	spec_features	source	citation	wavelength	albedo
0	sodium chloride	NaCl	80.0	[20, 50]	lab	0	[]	https://agupubs.onlinelibrary.wiley.com/action...	Hanley et al (2014)	[0.35, 0.351, 0.352, 0.353, 0.354, 0.355, 0.35...	[0.256260774, 0.258040028, 0.260486898, 0.2613...