Vignettes are long form documentation commonly included in packages.
Because they are part of the distribution of the package, they need to
be as compact as possible. The html_vignette
output type
provides a custom style sheet (and tweaks some options) to ensure that
the resulting html is as small as possible. The
html_vignette
format:
- Never uses retina figures
- Has a smaller default figure size
- Uses a custom CSS stylesheet instead of the default Twitter Bootstrap style
Vignette Info
Note the various macros within the vignette
setion of
the metadata block above. These are required in order to instruct R how
to build the vignette. Note that you should change the
title
field and the \VignetteIndexEntry
to
match the title of your vignette.
Styles
The html_vignette
template includes a basic CSS theme.
To override this theme you can specify your own CSS in the document
metadata as follows:
output:
rmarkdown::html_vignette:
css: mystyles.css
Figures
The figure sizes have been customised so that you can easily put two images side-by-side.
You can enable figure captions by fig_caption: yes
in
YAML:
output:
rmarkdown::html_vignette:
fig_caption: yes
Then you can use the chunk option
fig.cap = "Your figure caption."
in
knitr.
More Examples
You can write math expressions,
e.g. ,
footnotes1, and tables, e.g. using
knitr::kable()
.
mpg | cyl | disp | hp | drat | wt | qsec | vs | am | gear | carb | |
---|---|---|---|---|---|---|---|---|---|---|---|
Mazda RX4 | 21.0 | 6 | 160.0 | 110 | 3.90 | 2.620 | 16.46 | 0 | 1 | 4 | 4 |
Mazda RX4 Wag | 21.0 | 6 | 160.0 | 110 | 3.90 | 2.875 | 17.02 | 0 | 1 | 4 | 4 |
Datsun 710 | 22.8 | 4 | 108.0 | 93 | 3.85 | 2.320 | 18.61 | 1 | 1 | 4 | 1 |
Hornet 4 Drive | 21.4 | 6 | 258.0 | 110 | 3.08 | 3.215 | 19.44 | 1 | 0 | 3 | 1 |
Hornet Sportabout | 18.7 | 8 | 360.0 | 175 | 3.15 | 3.440 | 17.02 | 0 | 0 | 3 | 2 |
Valiant | 18.1 | 6 | 225.0 | 105 | 2.76 | 3.460 | 20.22 | 1 | 0 | 3 | 1 |
Duster 360 | 14.3 | 8 | 360.0 | 245 | 3.21 | 3.570 | 15.84 | 0 | 0 | 3 | 4 |
Merc 240D | 24.4 | 4 | 146.7 | 62 | 3.69 | 3.190 | 20.00 | 1 | 0 | 4 | 2 |
Merc 230 | 22.8 | 4 | 140.8 | 95 | 3.92 | 3.150 | 22.90 | 1 | 0 | 4 | 2 |
Merc 280 | 19.2 | 6 | 167.6 | 123 | 3.92 | 3.440 | 18.30 | 1 | 0 | 4 | 4 |
Also a quote using >
:
“He who gives up [code] safety for [code] speed deserves neither.” (via)