[R] conditionally disable evaluation of chunks in Rmarkdown...

[Jeff Newmiller]

Well, strictly speaking knitr and rmarkdown are a contributed packages and the official contact for any contributed package is found via the maintainer() function. The Posting Guide indicates that R-help should only be used as a backup if that avenue is a dead end.

To be fair to the OP, there are a lot of useful contributed packages that get discussed here anyway. But Bert is right that if there is a forum more appropriate for a contributed package then it should be preferred and any question posed here should mention any dead ends encountered and good netiquette would be to link to any publicly-visible record of those attempts.
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Sent from my phone. Please excuse my brevity.

On November 10, 2015 6:44:16 AM PST, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>Strictly speaking, wrong email list.
>
>Markdown is R Studio software, and you should post on their support
>site.
>
>Cheers,
>Bert
>
>
>Bert Gunter
>
>"Data is not information. Information is not knowledge. And knowledge
>is certainly not wisdom."
>   -- Clifford Stoll
>
>
>On Tue, Nov 10, 2015 at 2:40 AM, Witold E Wolski <wewolski at gmail.com>
>wrote:
>> I do have an Rmd where I would like to conditionally evaluate the
>second part.
>>
>> So far I am working with :
>>
>> ```{r}
>> if(length(specLibrary at ionlibrary) ==0){
>>   library(knitr)
>>   opts_chunk$set(eval=FALSE, message=FALSE, echo=FALSE)
>> }
>> ```
>>
>> Which disables the evaluation of subsequent chunks.
>>
>> However my RMD file contains also these kind of snippets : `r `
>>
>> How do I disable them?
>>
>> regards
>>
>>
>>
>> --
>> Witold Eryk Wolski
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.