R help - Jul 2008 - Hmisc latex function with longtable option

Hello -

I'm trying to use Hmisc's latex function to produce a postscript file of
a data.frame, using the longtable = TRUE option.  When I run, for example,

## sample R code
dvips(latex(data.frame(a = rnorm(100), b = rnorm(100)),
             longtable = TRUE), file = "test.ps")

latex runs successfully and a test.ps file is produced.  However, I see 
the following in the output that the latex command sends to the R buffer.

...
Package longtable Warning: Column widths have changed
(longtable)                in table 1 on input line 121.


Package longtable Warning: Table widths have changed. Rerun LaTeX.
...

And the resulting test.ps file has the column headings not aligned (in 
my real life example, there are other misalignments).

To resolve this, I am currently going into the /tmp/Rtmp****/ directory 
where the .tex files are created by the dvi.latex function, and 
rerunning latex on the appropriate file****.tex file.

Is there any thing I'm missing that would make this easier?

Thanks,
Erik Iverson
iverson at biostat.wisc.edu

Erik Iverson wrote:
> Hello -
> 
> I'm trying to use Hmisc's latex function to produce a postscript
file of
> a data.frame, using the longtable = TRUE option.  When I run, for example,
> 
> ## sample R code
> dvips(latex(data.frame(a = rnorm(100), b = rnorm(100)),
>             longtable = TRUE), file = "test.ps")
> 
> latex runs successfully and a test.ps file is produced.  However, I see 
> the following in the output that the latex command sends to the R buffer.
> 
> ...
> Package longtable Warning: Column widths have changed
> (longtable)                in table 1 on input line 121.
> 
> 
> Package longtable Warning: Table widths have changed. Rerun LaTeX.
> ...
> 
> And the resulting test.ps file has the column headings not aligned (in 
> my real life example, there are other misalignments).
> 
> To resolve this, I am currently going into the /tmp/Rtmp****/ directory 
> where the .tex files are created by the dvi.latex function, and 
> rerunning latex on the appropriate file****.tex file.
> 
> Is there any thing I'm missing that would make this easier?
> 
> Thanks,
> Erik Iverson
> iverson at biostat.wisc.edu
longtable requires two passes at the LaTeX code to finish the job.  If 
you use

m <- latex(..., file='my.tex')

and \include{my} in a master document, you can run latex twice on the 
master to get the desired result.

Frank
> 
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> 

-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University