How to rotate one plot out of many when using knitr?

Question

I am using knitr with plots. I would like to rotate one of them 90 degree. For example:

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\\begin{document}


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Answer 1

I think you can use out.extra in the chunk options:

From knitr docs: http://yihui.name/knitr/options

out.extra: (NULL; character) extra options for figures, e.g. out.extra='angle=90' in LaTeX output will rotate the figure by 90 degrees; it can be an arbitrary string, e.g. you can write multiple figure options in this option; it also applies to HTML images (extra options will be written into the tag, e.g. out.extra='style="display:block;"')

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