Obtain the figure filenames for a chunk
Given a chunk label, the figure file extension, the figure number(s), and the
chunk option fig.path, return the filename(s).
fig_chunk(label, ext = "", number, fig.path = opts_chunk$get("fig.path"))label |
The chunk label. |
ext |
The figure file extension, e.g. |
number |
The figure number (by default |
fig.path |
Passed to |
This function can be used in an inline R expression to write out the figure
filenames without hard-coding them. For example, if you created a plot in a
code chunk with the label foo and figure path ‘my-figure/’, you
are not recommended to use hard-coded figure paths like
\includegraphics{my-figure/foo-1.pdf} (in ‘.Rnw’ documents) or
 (R Markdown) in your document. Instead, you
should use \Sexpr{fig_chunk('foo', 'pdf')} or `).
You can generate plots in a code chunk but not show them inside the code
chunk by using the chunk option fig.show = 'hide'. Then you can use
this function if you want to show them elsewhere.
A character vector of filenames.
library(knitr)
fig_chunk("foo", "png")
fig_chunk("foo", "pdf")
fig_chunk("foo", "svg", 2) # the second plot of the chunk foo
fig_chunk("foo", "png", 1:5) # if the chunk foo produced 5 plotsPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.