Message-ID: <20050317121723.32206089.Achim.Zeileis@wu-wien.ac.at>
Date: 2005-03-17T11:17:23Z
From: Achim Zeileis
Subject: kernlab sigest
In-Reply-To: <Pine.A41.4.42.0503171027330.25140-100000@aixterm9.urz.uni-heidelberg.de>
Bjoern,
thanks for your mail. But when reporting problems with a contributed
package, please contact the maintainer first or at least Cc him when
writing to R-help.
The problem below is in the formula method of sigest because the frac
argument gets passed on to model.frame which causes the error. I'll
commit a fix, but you can do it also easily locally if you add the
second line of
m$scaled <- NULL
m$frac <- NULL
in the formula method of sigest.
Best,
Z
On Thu, 17 Mar 2005 10:39:23 +0100 (CET) bjoern h menze wrote:
> hello,
>
> I have the following problem setting parameter 'frac' in the sigest
> function of the kernlab package.
>
> ## executing the ?sigest example:
> library(kernlab)
> data(spam)
> srange <- sigest(type~.,data = spam)
>
> ## works fine...
>
> ## setting 'frac' explicitly
> ## (in this case even to the default of .25)
> options(error=recover)
> srange <- sigest(type~.,data = spam, frac = .25)
>
> ## fails..
>
> Error in model.frame(formula, rownames, variables, varnames, extras,
> extranames, :
> variable lengths differ
>
> Enter a frame number, or 0 to exit
> 1:sigest(type ~ ., data = spam, frac = 0.25)
> 2:sigest(type ~ ., data = spam, frac = 0.25)
> 3:.local(x, ...)
> 4:eval(m, parent.frame())
> 5:eval(expr, envir, enclos)
> 6:model.frame(data = ..1, frac = 0.25, formula = x)
> 7:model.frame
>
> any ideas?
>
> thank you,
> Bjoern
>
>
> ---
>
> bjoern menze
> menze @ uni-hd de
> # 0170 5894150 (mobil)
> # 06221 548829 (institut)
> # 06221 470787 (heidelberg)
> bergstrasse 42 69120 heidelberg
>
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