Re: Error in plot.aov() (PR#356) (fwd)

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Subject: Re: Error in plot.aov() (PR#356) (fwd)
ripley@stats.ox.ac.uk
Date: Fri 03 Dec 1999 - 17:16:42 EST


Message-Id: <199912030716.IAA29071@pubhealth.ku.dk>

Confirmation from John Maindonald.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

---------- Forwarded message ---------- Date: Fri, 3 Dec 1999 15:13:42 +1100 (EST) From: John Maindonald <john.maindonald@anu.edu.au> To: ripley@stats.ox.ac.uk Subject: Re: Error in plot.aov() (PR#356)

Brian, you wrote -

> On Thu, 2 Dec 1999 john.maindonald@anu.edu.au wrote: > > > The error occurs following the third Hit <Return> below: > > > > > y_rnorm(40) > > > gp_factor(rep(1:4,c(10,10,10,10))) > > > xx.aov_aov(y~gp) > > > summary(xx.aov) > > Df Sum Sq Mean Sq F value Pr(>F) > > gp 3 0.67 0.22 0.29 0.84 > > Residuals 36 28.30 0.79 > > > coef(xx.aov) > > (Intercept) gp2 gp3 gp4 > > 0.286147 0.260974 -0.081828 0.126678 > > > plot(xx.aov) > > Hit <Return> to see next plot: > > Hit <Return> to see next plot: > > Hit <Return> to see next plot: > > Error in as.name(ylab23) : invalid type/length (1/0) in vector allocation > > Interesting. There is no plot.aov on my system: this is using plot.lm. > And I get no error. It could be random, except this has nothing to do with > the data, only the labelling. > > The error message means that ylab23 in NULL. I don't see how that can > happen with the system version of plot.lm. > > My guess is masking. Do you have a local plot.lm? Does this happen if > you start R with --vanilla?

You are quite right. I had an experimental version of plot.lm() lying around. I should have thought of that.

Regards John Maindonald email : john.maindonald@anu.edu.au Statistical Consulting Unit, phone : (6249)3998 c/o CMA, SMS, fax : (6249)5549 John Dedman Mathematical Sciences Building Australian National University Canberra ACT 0200 Australia

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