Description Usage Arguments Value Note Author(s) References See Also Examples
Evaluate the B-spline basis function at the x
value(s).
1 |
x |
Numerical value or vector. The value(s) at which to evaluate the B spline bases. |
knots |
Numerical vector. The knot positions/sites of the B-spline bases. |
ord |
An integer >=1. The order of the B-spline bases. Equals degree plus 1. |
A numerical matrix of length(x)
rows and
length(knots)-ord
columns.
In contrast to the implementation based on the splineDesign
function from the splines
package, this version of the B-spline
basis functions are left-continuous at the rightmost knot.
Feng Chen <feng.chen@unsw.edu.au>
de Boor, C. (2001) A Practical Guide to Splines. Revised Edition. Springer: New York.
1 2 3 |
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