Re: [R] Quantreg error

From: roger koenker <rkoenker_at_uiuc.edu>
Date: Tue 18 Jul 2006 - 00:44:56 EST

As I have already told you once, and as the posting guide suggests,

"If the question relates to a contributed package , e.g., one downloaded from CRAN, try contacting the package maintainer first. You can also use find("functionname") and packageDescription ("packagename") to find this information. Only send such questions to R-help or R-devel if you get no reply or need further assistance. This applies to both requests for help and to bug reports."

the error message seems quite clear: it means that the model that you have specified
implicitly with the formula has a singular X matrix. The quantile regression fitting
functions don't understand about singular designs; some day they may but it isn't
a high priority for me.

url:    www.econ.uiuc.edu/~roger            Roger Koenker
email    rkoenker@uiuc.edu            Department of Economics
vox:     217-333-4558                University of Illinois
fax:       217-244-6678                Champaign, IL 61820


On Jul 17, 2006, at 9:27 AM, ricardosilva@serasa.com.br wrote:

> Dear User,
> I got the following error running a regression quantile:
>
>> rq1<-rq(dep ~ ., model=TRUE, data=exo, tau=0.5 );
>> summary(rq1)
> Erro em rq.fit.fnb(x, y, tau = tau + h) :
> Error info = 75 in stepy: singular design
>
> Any hint about the problem?

>
>
> Thanks a lot,
> ________________________________________
> Ricardo Gonçalves Silva, M. Sc.
> Apoio aos Processos de Modelagem Matemática
> Econometria & Inadimplência
> Serasa S.A.
> (11) - 6847-8889
> ricardosilva@serasa.com.br
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Jul 18 01:13:38 2006

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