Highlights of the Knitr Package

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" summary

Knitr adds a multiline chunk‑option syntax using #| chunk‑option comments (YAML form supported and convert_chunk_header() available), option reuse via opts.label and ref.label (use I() to copy both options and code), and a file option to read one or more external scripts as the chunk body. New engines include comment, verbatim (with lang for syntax highlighting), embed, and exec — exec writes the chunk to a temp file and runs an arbitrary command with engine.opts for extra args.

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" chapters (10)

1. 0:00Start
2. 3:23I. Write chunk options in chunk body
3. 6:12Convert the old syntax to new syntax
4. 6:34Reuse chunk options and/or content from other chunks
5. 8:27Reuse both chunk options & content
6. 9:20Quick tips
7. 12:18New engines in knitr
8. 14:53The embed engine to embed external files and display their content verbatim.
9. 16:01The exec engine to execute an arbitrary system command on a file that contains the content of the chunk. The command is specified via the chunk option command, e.g..
10. 19:00Recap

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