Define knitr options for an R Markdown output format that creates PDF output.
knitr_options_pdf(fig_width, fig_height, fig_crop, dev = "pdf")Default width (in inches) for figures
Default height (in inches) for figures
Whether to crop PDF figures with the command
pdfcrop. This requires the tools pdfcrop and
ghostscript to be installed. By default, fig_crop = TRUE
if these two tools are available.
Graphics device to use for figure output (defaults to png)
An list that can be passed as the knitr argument of the
output_format function.