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return expected power at frequency = 0 #34

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return expected power at frequency = 0 #34

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2bfa2b3
fix power at zero frequency
Oct 9, 2018
a2c2850
fix power at zero frequency
Oct 9, 2018
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6 changes: 5 additions & 1 deletion gatspy/periodic/lomb_scargle_fast.py
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Original file line number Diff line number Diff line change
Expand Up @@ -322,7 +322,11 @@ def lomb_scargle_fast(t, y, dy=1, f0=0, df=None, Nf=None,
warnings.simplefilter("ignore")

power = (YC * YC / CC + YS * YS / SS) / YY


# fix power at zero frequency
if f0 == 0:
power[0] = np.mean(y ** 2 - (y - np.mean(y)) ** 2) / np.mean(y ** 2)

# fix NaN and INF at zero frequency
if np.isnan(power[0]) or np.isinf(power[0]):
power[0] = 0
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