How to get help on Rmarkdown chunks options?

Question

I started to play with Rmarkdown and I'm loving it. But I have newbbie question that, ridiculous or not, I can't find a straight forward answer:

I can't figure where in knitr documentation or elsewhere I can learn what are the useful things to write in the chunks insert to tell R what to plot or not. E.g:

```{r warnings=FALSE, message=FALSE}

Will prevent R messages and warnings to appear in the HTML output. I saw this in another question, and I am wondering how to figure things like that by myself using ? or similar.

Thanks.

Answer 1

Have you looked @ the documentation yihui provides on the knitr site?

I also highly recommend checking out his book he recently released dynamic documents with R and Knitr he covers everything you'd reasonably use and then some.

You can also easily explore the options in R studio by creating an R chunk

}```

adding a comma
```{r,
}```

and pressing tab after the comma and it will give you all the potential options - they are well named and you can easily focus your search more thoroughly. For example, if you noticed the `purl` option you could explore more and find it is for extracting R code from the chunk.