Calculates the seasonal spline for calc_phi_probs_spline
generate_phis(foi, knots, theta, n_years, buckets, degree = 2)
| foi | vector of force of infections per year |
|---|---|
| knots | vector of knots for the spline |
| theta | vector of theta parameters for spline |
| n_years | number of years to calculate |
| buckets | number of buckets per year (12 for monthly, 1 for annual) |
| degree | degree of the spline |
a vector of FOIs for each time point