fruitbat.utils

Utility functions for Fruitbat

fruitbat.utils.create_lookup_table(filename, method, cosmology, zmin=0, zmax=30, num_samples=100000.0)[source]

Creates a lookup table

Parameters:
  • filename (str) –
  • method (str) –
  • cosmology (dict) – A dictionary containing the cosmology parameters for the Hubble constant, Matter density, Baryon density and Dark Energy density. cosmology must contain values for the following keys: 'H0', 'Omega_m', 'Omega_b', 'Omega_L'
  • zmin (int or float, optional) – The minimum redshift in the table. Default: 0
  • zmax (int or float, optional) – The maximum redshift in the table. Default: 30
  • num_samples (int, optional) – The number of dispersion measure samples to perform before interpolation. Default: 100000
Returns:
Return type:

None
fruitbat.utils.load_lookup_table(filename, data_dir='data')[source]

Opens a saved .npy file containing an interpolated 1D function.

Parameters:
  • filename (str) – The name of the file to load.
  • data_dir (str, optional) – The directory containing the data. The whole path must be specified except if data_dir == ‘data’ then it will search in the data subdirectory of the source code. Default: ‘data’
Returns:

Function
Return type:

scipy.interpolate.interpolate.interp1d