14.6 Save a group of chunk options and reuse them (*)
If you frequently use some chunk options, you may save them as a group and reuse them later only using the group name. This can be done with
knitr::opts_template$set(name = list(options)). Then you can use the chunk option
opts.label to refer to the group name. For example:
opts.label = 'fullwidth', knitr will read chunk options from
knitr::opts_template, and apply them to the current chunk. This can save you some typing effort. If a chunk option is to be used globally in a document, you should consider setting it globally (see Chapter 11).
You can override options read from
opts.label, e.g., if you set
fig.height = 7 in the chunk below, the actual
fig.height will be
7 instead of
You can save an arbitrary number of grouped options, e.g.,
knitr::opts_template$set(group1 = list(...), group2 = list(...)).