Forecasting, Time Series Analysis, Fourier Transform, R, Ml So Good.
fourier(TC_ts, K=4), lambda="auto") summary(fourier.calls) Call: tslm(formula = TC_ts ~ trend + season + fourier(TC_ts, K = 4), lambda = "auto") Residuals: Min 1Q Median 3Q Max -68.689 -0.732 0.000 0.732 68.689 Coefficients: (7 not defined because of singularities) Estimate Std. Error t value