Density function for the normalized quadratic B-Spline distribution.
dbspline(x, theta, lwr, upr, log = FALSE)pbspline(x, theta, lwr, upr, lower.tail = TRUE, log.p = FALSE)
dbspline gives the density. The length of the result is determined
by the length of x for dbspline.
A vector of quantiles.
A vector of unnormalized spline parameters.
A scalar lower bound.
A scalar upper bound.
A logical value indication whether a probability p should be
given as log(p)