Ctrl+K

Full catalog analysis

Full catalog analysis#

class pylick.analysis.Catalog(IDs, load_spectrum, index_keys, z=None, meas_method='int', bpr_thres=1.0, file_table=None, plot=False, plot_settings={}, verbose=False)#

Class optimized to handle the analysis of an entire catalog of galaxies.

>>> from pylick.analysis import Catalog
>>> meas_table = Catalog(...)
>>> print(meas_table)
Parameters:

  • IDs (str) – galaxy unique identifier(s)

  • load_spectrum (funct) – takes one ID as argument and returns the corresponding spectral [wave, flux, err, mask].

  • index_keys (list) – keys of the indices to measure (see pylick.indices.IndexLibrary).

  • meas_method (str, optional) – method to measure the indices (“int”, “wei”, “exact”). Defaults to “int”.

  • z (list, optional) – if given, `wave`s are assumed to be in the obs. frame and shifted to rest-frame. Defaults to None.

  • bpr_thres (float, optional) – bad-to-total pixel ratio above which the measurement is not performed. Defaults to 1.

  • file_table (str, optional) – path to the file containing the indices definitions. Must be formatted as the default one located at data/file_table.dat.

  • plot (bool, optional) – produce plot file. Defaults to False.

  • plot_settings (dict, optional) – instruction for the plot code. Defaults to {}.

  • verbose (bool, optional) – prints warnings and execution time in the console. Defaults to False.

property results#

Retrieve the results table.

save(filename, filefmt='ascii.ecsv', prepend_colnames='', prepend_table=None)#

Save the results table.

Parameters:

  • filename (str) – filename.

  • filefmt (str, optional) – format of the astropy.Table to save. Defaults to “ascii.ecsv”.

  • prepend_colnames (str, optional) – string to which append index names to be used as catalog columns. Defaults to empty string.

  • prepend_table (astropy.Table, optional) – catalog to which append the results. Defaults to None.

Contents