R help - May 2011 - Problem with % in an example when running R CMD check

Using

platform       x86_64-pc-linux-gnu          
arch           x86_64                       
os             linux-gnu                    
system         x86_64, linux-gnu            
status                                      
major          2                            
minor          13.0                         
year           2011                         
month          04                           
day            13                           
svn rev        55427                        
language       R                            
version.string R version 2.13.0 (2011-04-13)

I am getting an error I haven't seen before when running R CMD check on a
package:

Warning: parse error in file 'rms-Ex.R':
14: unexpected symbol
376:     f <- ols(y ~ pol(x1,2) + pol(x2,2) + pol(x1,2) 
377:              subset
                  ^
The original (quote old) code in an 'example' section of an .Rd file is:

    f <- ols(y ~ pol(x1,2) + pol(x2,2) + pol(x1,2) %ia% pol(x2,2),
             subset=group==g)

Putting \ before the % gets around the problem but I didn't have to do that
before.

Any ideas?
Thanks Frank


-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
--
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http://r.789695.n4.nabble.com/Problem-with-in-an-example-when-running-R-CMD-check-tp3564354p3564354.html
Sent from the R help mailing list archive at Nabble.com.

I observed the same behaviour some time ago. The .Rd files are
pre-processed using a latex-like typesetter that discards everything
following a % sign as comments, even in example R code.

http://r.789695.n4.nabble.com/Rd-file-processing-suggestion-sign-in-examples-td3459570.html

HTH,

Peter


On Tue, May 31, 2011 at 2:08 PM, Frank Harrell <f.harrell at
vanderbilt.edu> wrote:
> Using
>
> platform ? ? ? x86_64-pc-linux-gnu
> arch ? ? ? ? ? x86_64
> os ? ? ? ? ? ? linux-gnu
> system ? ? ? ? x86_64, linux-gnu
> status
> major ? ? ? ? ?2
> minor ? ? ? ? ?13.0
> year ? ? ? ? ? 2011
> month ? ? ? ? ?04
> day ? ? ? ? ? ?13
> svn rev ? ? ? ?55427
> language ? ? ? R
> version.string R version 2.13.0 (2011-04-13)
>
> I am getting an error I haven't seen before when running R CMD check on
a
> package:
>
> Warning: parse error in file 'rms-Ex.R':
> 14: unexpected symbol
> 376: ? ? f <- ols(y ~ pol(x1,2) + pol(x2,2) + pol(x1,2)
> 377: ? ? ? ? ? ? ?subset
> ? ? ? ? ? ? ? ? ?^
> The original (quote old) code in an 'example' section of an .Rd
file is:
>
> ? ?f <- ols(y ~ pol(x1,2) + pol(x2,2) + pol(x1,2) %ia% pol(x2,2),
> ? ? ? ? ? ? subset=group==g)
>
> Putting \ before the % gets around the problem but I didn't have to do
that
> before.
>
> Any ideas?
> Thanks Frank
>
>
> -----
> Frank Harrell
> Department of Biostatistics, Vanderbilt University
> --