ncs function

The natural cubic spline interpolation

This function performs the natural cubic spline interpolation of a design matrix.

ncs(x)

Arguments

• x: The design matrix.

Returns

• cf0: The coefficient matrix for B-splines obtained by natural cubic spline interpolation of x.

Details

Usually only called by srp.c and srp.l.

Examples

x <- matrix(rnorm(100), ncol=10)
ncs(x)$cf0

See Also

srp.c, srp.l

Author(s)

Hyeyoung Maeng, h.maeng@lse.ac.uk