[R] LaTex error when creating DVI version when compiling package

[Roger Bivand]

On Sat, 29 Oct 2005, Patrick Giraudoux wrote:

> Dear Listers,
> 
> I got this message when compiling a package:
> 
> * creating pgirmess-manual.tex ... OK
> * checking pgirmess-manual.text ... ERROR
> LaTex errors when creating DVI version.
> This typically indicates Rd problems.
> 
> The message is quite explicit but I struggled a lot before understanding 
> that the trouble comes from a single file "selMod.rd" among 44 topics. 
> Even though I have checked it ten times and even rewrite it on 
> prompt(selMod), I cannot find out what is wrong with it.
> 
> Can somebody used with LaTex and the format of R *.rd file have a quick 
> look to the attached contents and tell me if he can detect some obvious 
> faulty writing?

The general answer is to look through the (often very long) *.log file in 
the *.Rcheck directory until you find the problem. That will typically 
give you a line number in the *.tex file, which shows not only where the 
error occurred, but the *.log file entry often shows what it is. My 
typical errors are using LaTeX special symbols, and most often having 
unprotected $ and _. I see quite a lot of _ below in \value{}, so I'd try 
\_ there first.

Roger


> 
> Thanks in advance,
> 
> Patrick
> 
> 
> 
> \name{selMod}
> \alias{selMod}
> \alias{selMod.lm}
> \alias{selMod.glm}
> \alias{selMod.list}
> 
> \title{ Model selection according to information theoretic methods }
> \description{
>  Handles lm, glm and list of models lm, glm, lme and nlme objects and 
> provides parameters to compare models according to Anderson et al. (1998)
> }
> \usage{
>     selMod(aModel, Order = "AICc", ...) group method
> 
>     selMod.lm(aModel, Order = "AICc", dropNull = FALSE, selconv=TRUE, ...)
>     selMod.list(aModel, Order = "AICc", ...)
> }
> 
> \arguments{
>   \item{aModel}{ a lm or glm model or a list of lm or glm models }
>   \item{dropNull}{ if TRUE, drops the simplest model (e.g. 'y~1')  }
>   \item{Order}{ if set to "AICc" (default) sort the models on this 
> parameter, otherwise "AIC" is allowed }
>   \item{selconv}{ if TRUE (default) keep the models for which 
> convergence is obtained (glm object only) and with no anova singularity 
> (lm and glm) }
>   \item{...}{ other parameters to be passed as arguments (not used here) }
> }
> 
> \details{
>   This function provides parameters used in the information theoretic 
> methods for model comparisons. lm and glm objects can be passed directly 
> as the upper scope of term addition (all terms added).
>   Every model from 'y~1' is computed adding one term at a time until the 
> upper scope model is derived. A list of user specified lm, glm, lme or 
> nlme objects can alternately be passed.
> }
> 
> \value{
>  A list with the following items:
>   \item{AIC}{a data.frame including LL, the maximized log-likelihood; K 
> the number of estimated parameters; N2K, number of observations/K; AIC, 
> the Akaike index criterion; deltAIC, the difference between AIC and the 
> lowest AIC value; w_i, the Akaike weights; AICc, the second order Akaike 
> criterion; deltAICc, the difference between AICc and the lowest AICc 
> value; w_ic, the AICc weights }
>   \item{models}{the list of models}
> }
> \references{
>     Anderson, D.R., Link, W.A., Johnson, D.H. and Burnham, K.P. (2001). 
> Suggestions for presenting the results of data analyses. Journal of 
> Wildlife Management, 65, 373-378; Burnham, K.P. and Anderson, D.R. 
> (2002) Model Selection and Multimodel Inference: a Practical 
> Information-Theoretic Approach, 2nd edn., Springer-Verlag, New York. 353 pp
>  }
> \author{ Patrick Giraudoux and David Pleydell: pgiraudo at univ-fcomte.fr, 
> dpleydel at univ-fcomte.fr }
> 
> \seealso{ \code{\link{AIC}},\code{\link{logLik}} }
> \examples{
>  library(MASS)
>  anorex.1 <- lm(Postwt ~ Prewt*Treat, data = anorexia)
>  selMod(anorex.1)
>  anorex.2 <- glm(Postwt ~ Prewt*Treat, family=gaussian,data = anorexia)
>  selMod(anorex.2)
>  anorex.3<-lm(Postwt ~ Prewt+Treat, data = anorexia)
>  selMod(list(anorex.1,anorex.2,anorex.3))
> }
> \keyword{ models }
> 
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no