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I just updated R to 3.0.0. I couldn't compile PDF from my .Rnw file, which I could do with R 2.15. Here is the error I got:

! Undefined control sequence.
l.192 \SweaveOpts
                 {concordance=TRUE}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

It seems related to Sweave. But I was using knitr to weave .Rnw file. Could some one help me fix the problem?

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1 Answer 1

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Remove \SweaveOpts{concordance=TRUE} in your Rnw file. It is invalid and useless to knitr.

Update: I have fixed the plot problem in the development version (v1.2.4). See here for instructions on installation. It will go to the stable version 1.3 eventually, but perhaps not until a month later.

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  • Yihui, Thank you so much for your quick response. I removed \SweaveOpts{concordance=TRUE} from the Rnw file, which was put in my Rnw file by Rstudio when Preference -> Sweave -> "Always enable Rnw concordance (required for syntex)" was checked. I had to uncheck that option. The error is gone. But I still have problem to compile PDF file with some warnings. I will try to figure it out later. [Update 4/13/13]: The problem is knitr generated two figure PDFs for one code chunk. And the first PDF has no page, which causes the following error: !pdfTeX error: /usr/texbin/pdflatex (file ./figure/minim
    – user28957
    Apr 13, 2013 at 2:07

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