[R] trouble with \textless in Hmisc latex() on a drop1 object

[Duncan Murdoch]

On 21/10/2010 9:21 PM, Christopher W Ryan wrote:
> Yes, it's homework . . . delete now if desired . . . but I think it is an
> interesting problem.

Looks like a simple bug in Hmisc, leaving out that space.  I'd grab a 
copy of the source, fix it, and send a patch to the maintainer (Charles 
Dupont <charles.dupont at vanderbilt.edu>, who is cc'd).  Or, if you don't 
know how to do that, just write to the maintainer.  Your example should 
be sufficient for him to find and fix it.  But then you'll have to wait 
until he has time...

Duncan Murdoch

>
> Running R 2.11.1, LaTeX on WinXP, via Sweave.
>
> A drop1() object from a glm() produces, as part of its output, a string that
> looks like this:
>
> <none>
>
> The trouble I run into is  that running latex() on a drop1() object from
> glm() produces a string that looks like this in the generated .tex file:
>
> \textlessnone\textgreater
>
> This gives an "undefined control sequence" error when compiling  the .tex
> file. I can just<ENTER>  past the error, but the resulting .pdf file
> contains just a greater-than symbol in the table where<none>  is supposed to
> appear.
>
> If I go into the .tex file and manually insert a space, changng it to
>
> \textless none\textgreater
>
> the document compiles fine.
>
> Reproducile example below. Any suggestions?
>
> Thanks.
> Chris Ryan
> SUNY Upstate Medical University Binghamton Clinical Campus
>
> \documentclass{article}
> \begin{document}
>
> <<options, echo=FALSE, hide=TRUE>>=
> options(SweaveSyntax = "SweaveSyntaxNoweb")
> library(Hmisc)
> @
>
> <<code>>=
> salmon<- data.frame(cbind(c(rep(0,49),rep(1,51)), rnorm(100), rnorm(100)))
> names(salmon)<- c("country","freshwater","marine")
> model1<- glm(country~freshwater+marine, family="binomial", data=salmon)
> summary(model1)
> model1r<- round(drop1(model1),3)
> @
>
> Here is some problem code.
>
> <<problemcode, results=tex>>=
> latex(model1r, file="", caption="signficance of individual predictors")
> @
>
> \end{document}
>
> 	[[alternative HTML version deleted]]
>
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