I would like to be able to use knitr to produce a structured PDF file. I did not see anything unless the input file is Sweave format. This question may be too vague but I really like to know right from knitr, is it possible to create a structured PDF output file without using any Sweave or LaTeX?
RUser
Try using command knit2pdf if you haven't already.
来源：https://stackoverflow.com/questions/14586177/knitr-to-produce-pdf-output-file