| align_pcdirs | Obtain PC directions with centered warping functions |
| center_warping_funs | Center warping functions |
| compute_pfi | Compute permutation feature importance (PFI) |
| plot_pc_directions | Plot principal component directions |
| prep_testing_data | Align test data and apply fPCA using elastic method applied to training data |
| prep_training_data | Align training data and apply a method of elastic fPCA |
| shifted_peaks | "Shifted Peaks" Simulated Dataset |
| simulate_functions | Simulate example functional data |