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
Usage:
## S3 method for class 'smooth.Pspline'
predict(object, xarg, nderiv = 0, ...)
Arguments:
object: a fitted ‘smooth.Pspline’ object.
so you needed to follow the help ....
The maintainer of pspline.
-Zoe Richards
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Brian D. Ripley, rip...@stats.ox.ac.uk
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