R help - Dec 2011 - Sweave problem on Mac OS when using umlauts and summary()

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This problem comes up so frequently that I have made
options(useFancyQuotes=FALSE) by default in my knitr package:
http://yihui.github.com/knitr/

You can also use options(useFancyQuotes='TeX').

Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: 515-294-2465 Web: http://yihui.name
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA



On Fri, Dec 2, 2011 at 4:08 PM, Mark Heckmann <mark.heckmann at gmx.de>
wrote:
> I have the following Sweave file which gets sweaved correctly.
>
> <<>>> m <- lm(y1 ~x1, anscombe)
> summary(m)
> @
>
> I include the sweaved .tex file into another .tex file via include.
> When I use a single umlaut in the .snw file a warning occurs.
> As a result part of the summary output is not contained in the .tex file.
>
> ?
> <<>>> m <- lm(y1 ~x1, anscombe)
> summary(m)
> @
>
> You can now run (pdf)latex on 'ch1.tex'
> Warnmeldungen:
> 1: ?ch1.Snw? has unknown encoding: assuming Latin-1
> 2: ung?ltige Zeichenkette in Konvertierung der Ausgabe (wrong character in
conversion of output)
>
> Interestingly, this error does NOT occur, when I omit the summary(m)
statement.
>
> ?
> <<>>> m <- lm(y1 ~x1, anscombe)
> #summary(m)
> @
>
> You can now run (pdf)latex on 'ch1.tex'
> Warnmeldung:
> ?ch1.Snw? has unknown encoding: assuming Latin-1
>
> I know that I can prevent this by adding a line at the beginning of the
.snw file:
>
> \usepackage[utf8]{inputenc}
>
> ?
> <<>>> m <- lm(y1 ~x1, anscombe)
> summary(m)
> @
>
> This gets sweaved correctly without warnings:
>
> But this solution is not good as it is not the preamble of the .tex
document where I add the usepackage line.
> This will cause an error when processing the entire document with tex.
>
> How can I achieve the last result in another way?
> I tried:
>
> Sweave('/Users/markheckmann/Desktop/test_sweave/ch1.Snw',
encoding="UFT-8")
>
> But this does not work either when the usepackage line is omitted.
>
> I am stuck here. Can anyone help?
>
> TIA
> Mark
>
>
> ????????????????????????????????????
> Mark Heckmann
> Blog: www.markheckmann.de
> R-Blog: http://ryouready.wordpress.com
>
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