Using Lomb-Scargle Periodograms to Identify Periodic Genes in ...
Using Lomb-Scargle Periodograms to Identify Periodic Genes in ...
Using Lomb-Scargle Periodograms to Identify Periodic Genes in ...
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<strong>Lomb</strong>-<strong>Scargle</strong> PeriodogramExample <strong>Us<strong>in</strong>g</strong> NoiseNoise (N=48)Time Interval VariabilityExpression-1.0 0.0 0.5 1.0N = 480 10 20 30 40Frequency0 2 4 6 8-1.0 -0.5 0.0 0.5 1.0Time [hours]log10(delta T)Normalized Power Spectral Density0 5 10 20<strong>Lomb</strong>-<strong>Scargle</strong> PeriodogramPeriod at Peak = 7.4 hoursp = 1e-06p = 1e-05p = 1e-04p = 0.001p = 0.01p = 0.050.00 0.05 0.10 0.15 0.20Probability0.0 0.4 0.8Peak Significancep = 0.973 at Peak0.00 0.05 0.10 0.15 0.20Frequency [1/hour]Frequency [1/hour]10
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