This function computes minimum square estimates for Fourier coefficients.
A time series to be smoothed.
Order of the Fourier polynomial. Default value is computed using the Sturge's rule.
A vector with the fourier coefficients.
x <- seq(from = -pi, to = pi, by = 0.01) y <- x^2 + rnorm(length(x), sd = 0.1) v_coef <- coef_fourier(y)
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