[R] quantile regression: warning message

[T.Riedle]

Thank you very much.
So, the results are correct and the differences between the solutions are pretty small. Thus, I do not need to worry about the warning message? Yes?



-----Original Message-----
From: Roger Koenker [mailto:rkoenker at illinois.edu] 
Sent: 13 October 2015 21:59
To: T.Riedle
Cc: R-help at r-project.org
Subject: Re: [R] quantile regression: warning message

see the output from the quantreg FAQ:

	FAQ()

especially point 2.


url:    www.econ.uiuc.edu/~roger            Roger Koenker
email    rkoenker at uiuc.edu            Department of Economics
vox:     217-333-4558                University of Illinois
fax:       217-244-6678                Urbana, IL 61801

> On Oct 13, 2015, at 2:55 PM, T.Riedle <tr206 at kent.ac.uk> wrote:
> 
> Greetings R Community,
> I am trying to run a quantile regression using the quantreg package. My code looks as follows:
> RegressionUtilitiesUK<-rq(ReturnUtilities~yield.spread.change+ReturnFT
> SE, tau=0.01,data=State_variables_UK_calm)
> 
> Unfortunately, the summary() function returns the results but also following warning message:
> Warning message:
> In rq.fit.br(x, y, tau = tau, ...) : Solution may be nonunique
> 
> My question now is if I should worry about the results. Are my results correct and how can I avoid this message? I do not understand the message.
> 
> Thanks a lot for your feedback.
> 
> 	[[alternative HTML version deleted]]
> 
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