DuchonS {ibr}

Computes the semi-kernel of Duchon splines

Description

The function DuchonS computes the semi-kernel of Duchon splines. This function is not intended to be used directly.

Usage

DuchonS(x,m=2)

Arguments

x

A numeric matrix of explanatory variables, with n rows and p columns.

m

Order of derivatives.

Value

The polynomial part evaluated.

Author(s)

Pierre-Andre Cornillon, Nicolas Hengartner and Eric Matzner-Lober.

References

Duchon, J. (1977) Splines minimizing rotation-invariant semi-norms in Solobev spaces. in W. Shemp and K. Zeller (eds) Construction theory of functions of several variables, 85-100, Springer, Berlin.

See Also

ibr