[R] B-spline/smooth.basis derivative matrices

[aleksandr shfets]

Hello again,
Thank you, vito for these functions: I've been able to look at the smoothing spline matrix and its derivatives that I constucted with functions "create.bspline.basis" and "smooth.basis" 

Understanding from Hastie and Tishbirani that the S(lambda)-- the penalty matrix

25 февраля 2012, 15:11 от "vito.muggeo" <vito.muggeo at unipa.it>:
> dear s,
> 
> If you are willing to use B-splines placing p knots, say, (rather than smoothing splines
> placing n knots), you could have a look to the functions splineDesign() or spline.des()
> (argument derivs) in the package "splines".
> 
> vito
> 
> On Fri, 24 Feb 2012 12:28:58 -0800 (PST), Vassily Shvets wrote
> > Hello,
> > I've noticed that SPLUS seems to have a function for evaluating derivative
> > matrices of splines. I've found the R function that evaluates matrices from
> > 'smooth.spline'; maybe someone has written something to do the same with smooth.basis?
> > regards,
> > s
> >
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