[R] predict.smooth.Pspline function not found
Prof Brian Ripley
ripley at stats.ox.ac.uk
Thu Feb 28 07:55:02 CET 2013
On 28/02/2013 00:29, zoe richards wrote:
> I have a simple question that irritatingly I haven't been able to figure
> out on my own. It seems that some functions from the "Pspline" package are
> successfully installed while others are not. The code with which I'm
> working is more complicated, but the following highlights my problem. If I
> run the following code
>> tt <- seq (0,1,length=20)
>> xt <- tt^3
>> fit <- smooth.Pspline (tt, xt, norder=3,spar=0.0001, method=1)
>> pred<- predict.smooth.Pspline (fit, tt, nderiv=0)
> I get this error:
> "Error: could not find function "predict.smooth.Pspline""
> So it seems like "smooth.Pspline" is loading but "predict.smooth.Pspline"
> isn't. Any ideas about why this might be the case?
You should not be calling a method directly. Call predict(). If you
look at the help in ?predict.smooth.Pspline, it says
## S3 method for class 'smooth.Pspline'
predict(object, xarg, nderiv = 0, ...)
object: a fitted ‘smooth.Pspline’ object.
so you needed to follow the help ....
The maintainer of pspline.
> -Zoe Richards
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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