FoFCatalogMatching
Using friends-of-friends method to iteratively match multiple sky catalogs without the need of specifying the main catalog.
The FoFCatalogMatching package was developed as part of the SAGA Survey.
If you use this package in your research, please considering citing
SAGA Stage II paper (Mao et al. 2020).
Installation
pip install https://github.com/yymao/FoFCatalogMatching/archive/master.zipExample
import numpy as np
from astropy.table import Table
import FoFCatalogMatching
n = 100
ra = np.random.uniform(0, 360, n)
dec = np.random.uniform(-90, 90, n)
cat_a = Table({'ra': ra, 'dec': dec})
cat_b = Table({'ra': ra+np.random.normal(0, 0.0002, n), 'dec': dec+np.random.normal(0, 0.0002, n)})
cat_c = Table({'ra': ra+np.random.normal(0, 0.0002, n), 'dec': dec+np.random.normal(0, 0.0002, n)})
results = FoFCatalogMatching.match({'a': cat_a, 'b':cat_b, 'c':cat_c},
{3.0: 3, 2.0: 3, 1: None})
