I have been getting this warning quite a bit when relocating very large catalogs. I think it is harmless but it can be a bit distracting.
../scipy/optimize/_numdiff.py:686: RuntimeWarning: invalid value encountered in subtract
df = [f_eval - f0 for f_eval in f_evals]
I think I finally traced it back to rms in locate.pyx
if valid_measurements == 0:
return np.inf
it seems optimize prefers that to just return a "very large RMS" if there are no valid arrivals so it is working with small but still non-zero numbers. I just changed it to return 1e6 and all the warnings went away. For the little it's worth!
I have been getting this warning quite a bit when relocating very large catalogs. I think it is harmless but it can be a bit distracting.
I think I finally traced it back to
rmsinlocate.pyxit seems
optimizeprefers that to just return a "very large RMS" if there are no valid arrivals so it is working with small but still non-zero numbers. I just changed it to return 1e6 and all the warnings went away. For the little it's worth!