| apply_stationarity | Apply Stationarity Transformation to a Train/Test Split |
| btwar_fit | Fit a Butterworth-Induced Autoregressive Model |
| coef.btwar | Extract AR Coefficients from a BTWAR Model |
| compute_spectrum | Compute the One-Sided Power Spectrum |
| fitted.btwar | Fitted Values from a BTWAR Model |
| mse | Mean Squared Error |
| plot.btwar | Plot Predictions from a BTWAR Model |
| plot_bode | Plot the Bode Magnitude Diagram of a BTWAR Model |
| plot_freq_amplitude | Plot the Frequency Amplitude Spectrum of a Time Series |
| plot_zpoles | Plot Z-Plane Poles from a BTWAR Model |
| poles_AR | Compute Z-Plane Poles of an AR Model |
| predict.btwar | Predict from a BTWAR Model |
| print.btwar | Print a BTWAR Model |
| print.summary.btwar | Print a BTWAR Model Summary |
| residuals.btwar | Residuals from a BTWAR Model |
| rmse | Root Mean Squared Error |
| simulate_ar_split | Simulate an AR(p) Series and Split into Train/Test Sets |
| summary.btwar | Summarise a BTWAR Model |
| yhat_ar | One-Step-Ahead AR Predictions |
| yhat_arma | One-Step-Ahead ARMA Predictions |