[R] Strange warning in summary.lm

[ONKELINX, Thierry]

The problem also exists in a clean workspace. But I've found the
troublemaker. I had set options(OutDec = ","). Resetting this to
options(OutDec = ".") solved the problem.

Thanks,

Thierry

------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be
www.inbo.be 

Do not put your faith in what statistics say until you have carefully
considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney

 

> -----Oorspronkelijk bericht-----
> Van: Uwe Ligges [mailto:ligges op statistik.uni-dortmund.de] 
> Verzonden: donderdag 19 juli 2007 10:39
> Aan: ONKELINX, Thierry
> CC: r-help op stat.math.ethz.ch
> Onderwerp: Re: [R] Strange warning in summary.lm
> 
> 
> 
> ONKELINX, Thierry wrote:
> > Dear useRs,
> > 
> > Lately I noticed a strange warning in the summary of a 
> lm-object. Any 
> > idea what this warning is about? I'm using R 2.5.1 on Win XP pro.
> > 
> >> x <- rnorm(100)
> >> y <- rnorm(100)
> >> summary(lm(y~x))
> > 
> > Call:
> > lm(formula = y ~ x)
> > 
> > Residuals:
> >      Min       1Q   Median       3Q      Max 
> > -1,77809 -0,68438 -0,04409  0,63891  2,30863
> > 
> > Coefficients:
> >             Estimate Std. Error t value Pr(>|t|)
> > (Intercept) -0,00217    0,09244  -0,023    0,981
> > x            0,01315    0,09628   0,137    0,892
> > 
> > Residual standard error: 0,9236 on 98 degrees of freedom Multiple 
> > R-Squared: 0.0001903,  Adjusted R-squared: -0.01001
> > F-statistic: 0.01866 on 1 and 98 DF,  p-value: 0,8916
> > 
> > Warning message:
> > NAs introduced by coercion in: as.double.default(Cf[okP])
> 
> Probably you have an object in your workspace or another 
> attached environment in the search path that conflicts with 
> objects that are required to call summary(lm(...)). E.g. some 
> lm... oder summary... function?
> 
> Best,
> Uwe Ligges
> 
> 
> 
> > 	
> > Thanks,
> > 
> > Thierry
> > 
> > 
> ----------------------------------------------------------------------
> > --
> > ----
> > ir. Thierry Onkelinx
> > Instituut voor natuur- en bosonderzoek / Research Institute 
> for Nature 
> > and Forest Cel biometrie, methodologie en kwaliteitszorg / Section 
> > biometrics, methodology and quality assurance Gaverstraat 4 9500 
> > Geraardsbergen Belgium tel. + 32 54/436 185 
> Thierry.Onkelinx op inbo.be 
> > www.inbo.be
> > 
> > Do not put your faith in what statistics say until you have 
> carefully 
> > considered what they do not say.  ~William W. Watt A statistical 
> > analysis, properly conducted, is a delicate dissection of 
> > uncertainties, a surgery of suppositions. ~M.J.Moroney
> > 
> > ______________________________________________
> > R-help op 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
> > and provide commented, minimal, self-contained, reproducible code.
>