tpower: Truncated p-th power function. Helper function for creating the B-Spline basis (Code by Paul Eilers, Package JOPS, http://statweb.lsu.edu/faculty/marx/JOPS_0.1.0.tar.gz)
Description
Truncated p-th power function. Helper function for creating the B-Spline basis (Code by Paul Eilers, Package JOPS, http://statweb.lsu.edu/faculty/marx/JOPS_0.1.0.tar.gz)
Usage
tpower(x, t, p)
Arguments
x
Function value.
t
Point of truncation.
p
degree of the truncated polynomial function.
Value
Returns a piece-wise defined basis functions for x > t.