[R] Xtable giving an interesting problem

[Prof Brian Ripley]

Did you try dump.frames/debugger?  Or even traceback()?

> debugger()
Message:  Error in match.names(clabs, names(xi)) : names don't match 
previous names:
         F value, Pr(>F)
Available environments had calls:
1: xtable(fit.trans.aov)
2: xtable.aovlist(fit.trans.aov)
3: xtable.summary.aovlist(summary(x), caption = caption, label = label, 
align = ali
4: rbind(result, xtable.anova(x[[i]][[1]], caption = caption, label = 
label, align
5: rbind(...)
6: match.names(clabs, names(xi))
7: stop(paste("names don't match previous names:\n\t", paste(nmi[nii == 0], collaps

and if you look in xtable.summary.aovlist you will see it is trying to 
rbind a dataframe with 5 columns to one with three columns.  That's not
surprising given the print output for summary(fit.trans.aov) and is a 
design error in the xtable package that should be reported to the 
maintainer.

However, is this model really `interesting'?  I cannot see what you hoped 
to learn by fitting it.


On Mon, 7 Jun 2004, Shawn Way wrote:

> I'm using the current version of xtable for 1.9.0 and I have an
> interesting error:
> 
> Error in match.names(clabs, names(xi)) : names don't match previous
> names:
> 	 F value, Pr(>F)
> In addition: Warning message: 
> longer object length
> 	is not a multiple of shorter object length in: clabs == nmi 
> 
> This is produced in the following manner:
> 
> >data.trans <- data.frame(ref=rep(c(3.995,20.003),2),
>                               actual=c(.1,100.3,.1,100.3),
>                               level=gl(2,1))
>  
> >parameters <- data.frame(trans.range=c(0,100), trans.output=c(4,20),
>                           ref.error=c(.0074))
> >a <- lm(trans.range~trans.output,data=parameters)
> >pred <- data.frame(trans.output=data.trans$actual)
> >data.trans$cor <- predict(a,pred)
> >fit.trans <- lm(cor~ref,data.trans)
> >fit.trans.aov <- aov(cor~ref+Error(level),data.trans)
> >fit.trans
> 
> Call:
> lm(formula = cor ~ ref, data = data.trans)
> 
> Coefficients:
> (Intercept)          ref  
>     -180.66        39.12  
> 
> > fit.trans.aov
> 
> Call:
> aov(formula = cor ~ ref + Error(level), data = data.trans)
> 
> Grand Mean: 288.75 
> 
> Stratum 1: level
> 
> Terms:
>                      ref
> Sum of Squares  392189.1
> Deg. of Freedom        1
> 
> Estimated effects are balanced
> 
> Stratum 2: Within
> 
> Terms:
>                    Residuals
> Sum of Squares  1.074245e-27
> Deg. of Freedom            2
> 
> Residual standard error: 2.317591e-14 
> > summary(fit.trans.aov)
> 
> Error: level
>     Df Sum Sq Mean Sq
> ref  1 392189  392189
> 
> Error: Within
>           Df     Sum Sq    Mean Sq F value Pr(>F)
> Residuals  2 1.0742e-27 5.3712e-28               
> > library(xtable)
> > xtable(fit.trans.aov)
> Error in match.names(clabs, names(xi)) : names don't match previous
> names:
> 	 F value, Pr(>F)
> In addition: Warning message: 
> longer object length
> 	is not a multiple of shorter object length in: clabs == nmi 
> 
> 
> Any ideas?
> 
> 
> "Everything should made as simple as possible, but not simpler." 
> -Albert Einstein
> 
> 
> Shawn Way, PE
> Tanox, Inc.
> 10301 Stella Link
> Houston, TX 77025
> Engineering Manager
> Sway[at]tanox.com
> 
> 
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-- 
Brian D. Ripley,                  ripley at 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 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595