RuntimeWarning: invalid value encountered in divide

[Cossa98]

Hi,

I am trying to apply the LR method to crossmatch two catalogues within a given radius

If I follow these steps:

xm = Match(MeerKATcat, DECaLScat)
match_results_lr = xm.run(method='lr', radius=4.0*u.arcsec)

all_matches = xm.get_matchs()
print(all_matches)

I get:

/home/cossa/astromatch/astromatch/lr.py:456: RuntimeWarning: invalid value encountered in divide lr_table['REL_' + magcol] / lr_table['p_any_' + magcol] /home/cossa/astromatch/astromatch/lr.py:555: RuntimeWarning: invalid value encountered in divide mask_ratio = match['prob_this_match']/pi_max > prob_ratio_secondary /home/cossa/astromatch/astromatch/match.py:293: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison mask = np.char.strip(match[idcol]) == b'0.0'

I've tried to edit the lr.py code to address the issue but I don't know why division by zero or NaN values is occurring.