To whom it may concern,1.6.1 is not really latest public version of R.
I don't know whether this is really a bug with the Pspline package or only a problem with my installation. Things work fine in Linux but not in Mac OS X (Darwin). Both system run the latest public versions of R and Pspline.
R 1.6.2 works fine for Mac OS X 1.2.4:
> library(pspline)
> tt <- seq (0,1,length=20)
> xt <- tt^3
> fit <- smooth.Pspline (tt, xt, norder=3,spar=0.0001, method=1)
> predict.smooth.Pspline (fit, tt, nderiv=0)[,1]
[1] 0.0040913548 0.0002529571 -0.0004989511 0.0019184414 0.0077153296
[6] 0.0172687013 0.0311322187 0.0500210668 0.0747811296 0.1063514794
[11] 0.1457260829 0.1939169313 0.2519179914 0.3206683353 0.4010138472
[16] 0.4936697119 0.5991895918 0.7179504746 0.8501625554 0.9959086452
Try the latest version of R and see if it works for you.
btw: library(Pspline) works only because of case-insensitivity of HFS+.
- platform powerpc-apple-darwin6.4 arch powerpc os darwin6.4 system powerpc, darwin6.4 status Patched major 1 minor 6.2 year 2003 month 03 day 17
Cheers Simon
--- Simon Urbanek Department of computer oriented statistics and data analysis University of Augsburg Universit�tsstr. 14 86135 Augsburg Germany
Tel: +49-821-598-2236 Fax: +49-821-598-2280
[EMAIL PROTECTED] http://simon.urbanek.info
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