Optimise Sinus Fit for Fixed Period
optimise_sinus_fixedPeriod(df, period_length = 365.25)
| df | data frame with temperature data and columns "date" (YYYY-MM-DD) and "value" |
|---|---|
| period_length | period length (default: 365.25) |
list with fit parameters ("paras"), goodness-of-fit values ("gof"), special points, i.e. min/max/turning-points ("points), fit model ("lm_model") and input data ("data")
https://stats.stackexchange.com/questions/77543/how-do-i-get-the-amplitude-and-phase-for-sine-wave-from-lm-summary