gen_random_1d: Generate 1D random function from P-spline prior
Description
Samples from the P-spline prior and evaluates on a fixed grid.
Returns a numeric vector scaled to unit SD.
Usage
gen_random_1d(grid, k, wiggliness)
Value
Numeric vector, scaled to unit SD.
Arguments
- grid
Numeric vector of evaluation points.
- k
Number of B-spline basis functions.
- wiggliness
Controls smoothness. Higher = more wiggly.