Options for R code chunks. When running R code, the object
(default options) is not modified by chunk headers (local chunk options are
merged with default options), whereas
opts_current (current options)
changes with different chunk headers and it always reflects the options for
the current chunk.
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An object of class
list of length 5.
Normally we set up the global options once in the first code chunk in a
opts_chunk$set(), so that all latter chunks will
use these options. Note the global options set in one chunk will not affect
the options in this chunk itself, and that is why we often need to set global
options in a separate chunk.
str(knitr::opts_chunk$get()) for a list of default chunk options.
opts_current is read-only in the sense that it does nothing if
opts_current$set(); you can only query the options via
A list of available options: https://yihui.name/knitr/options/#chunk_options
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