These can be hard to spot. My technique (which in fact I did not need here) is to use 'less' in a C locale, as that does things like

    (s_{ij} - c_{ij})/[(c_{ii}c_{jj} - c_{ij}<B2>)/N]^{1/2}}

with <B2> in reverse video so it is hard to miss.

Brian

On Tue, 12 Jun 2007, John Fox wrote:

Dear Brian,

-----Original Message-----
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 12, 2007 7:45 AM
To: John Fox
Cc: r-devel@r-project.org
Subject: Re: [Rd] Warning under R 2.6.0: Rd files with
unknown encoding

On Tue, 12 Jun 2007, John Fox wrote:

Dear R-devel list members,

Under the development version of R (2.6.0), I notice that my sem
package produces the following warning:

        checking Rd files ... WARNING
        Rd files with unknown encoding:
        residuals.Rd

I wonder what the warning means. As far as I can see,
residuals.Rd is
similar to the other .Rd files in the package.

At least for the time being, I won't reproduce residuals.Rd here in
the interest of brevity.

You have in the \details of that file:

     (s_{ij} - c_{ij})/[(c_{ii}c_{jj} - c_{ij}²)/N]^{1/2}}

and that superscript 2 (which will probably come out in your
mailer but not for all readers) is not ASCII.  'Writing R
Extensions' tells you that for files that are not entirely
ASCII you need to declare the encoding:
I presume you want \encoding{latin1}.

Thanks for catching that. I wonder how it happened, since I believe that I
produced the file with a plain-text editor, probably Tinn-R.


You might also want to think about the N^{*} in the latex
version and the N in the not-so-plain text version.

Yes, I saw the missing asterisk (and the not-so-plain text) when I compared
the PDF and chtml versions of the help page in my attempt to locate the
error.

Thanks again,
John


--
Brian D. Ripley,                  [EMAIL PROTECTED]
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




--
Brian D. Ripley,                  [EMAIL PROTECTED]
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
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