14.4 Generate a plot and display it elsewhere
Normally plots generated in a code chunk are displayed beneath the code chunk, but you can choose to show them elsewhere and (optionally) hide them in the code chunk. Below is an example:
In the code chunk, we used the chunk option
fig.show='hide' to hide the plot temporarily. Then in another paragraph, we called the function
knitr::fig_chunk() to retrieve the path of the plot file, which is usually like
test_files/figure-html/cars-plot-1.png. You need to pass the chunk label and the graphical device name to
fig_chunk() for it to calculate the plot file path.
You may see https://stackoverflow.com/a/46305297/559676 for an application of
fig_chunk() to blogdown websites. This function works for any R Markdown output formats. It can be particularly helpful for presenting plots on slides, because the screen space is often limited on slide pages. You may present code on a slide, and reveal the plot on a different slide.