| arrangeTPRS | Create TPRS basis |
| computeS | Compute Smoothing Matrix |
| computeTPRS | Create TPRS basis |
| compute_effective_range | Compute effective range |
| compute_effective_range_nochecks | Compute effective range |
| compute_lowCurve | Compute loess curves for smoothing matrix |
| find_first_zero_cross | Find zero |
| find_zeros_cross | Find distance to first zero |
| fitLoess | Fit a loess curve |