Error(s) in re-building vignettes:
--- re-building ‘ggplot2-themes.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Warning: `showtext` is suggested by theme_xaringan() but is not installed.
Warning: `showtext` is suggested by theme_xaringan_base() but is not installed.
Warning: `showtext` is suggested by theme_xaringan_base() but is not installed.
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Kelly Slab"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "Oleo Script"
Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "Oleo Script"
Quitting from lines 113-115 (ggplot2-themes.Rmd) 
Error: processing vignette 'ggplot2-themes.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘ggplot2-themes.Rmd’

--- re-building ‘template-variables.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘template-variables.Rmd’

--- re-building ‘xaringanthemer.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
<!-- Set link to theme-settings, template-variables, theme functions -->



First, add the `xaringan-themer.css` file to the YAML header of your xaringan slides.

```yaml
output:
  xaringan::moon_reader:
    css: xaringan-themer.css
```

Then, in a hidden chunk just after the knitr setup chunk, load **xaringanthemer** and try one of the [theme functions][theme-functions].

````markdown
```{r xaringan-themer, include=FALSE, warning=FALSE}
library(xaringanthemer)
style_mono_accent(
  base_color = "#1c5253",
  header_font_google = google_font("Josefin Sans"),
  text_font_google   = google_font("Montserrat", "300", "300i"),
  code_font_google   = google_font("Fira Mono")
)
```
````

<img src="https://raw.githubusercontent.com/gadenbuie/xaringanthemer/assets/example_mono_accent_1c5253.png" alt="Example title and normal slides using a green xaringanthemer theme" data-external="1" />

### Matching ggplot Themes

[showtext]: https://github.com/yixuan/showtext

**xaringanthemer** even provides a [ggplot2] theme 
with `theme_xaringan()`
that uses the colors and fonts from your slide theme.
Built on the [showtext] package,
and designed to work seamlessly with [Google Fonts](https://fonts.google.com).

Color and fill scales are also provided
for matching sequential color scales based on 
the primary color used in your slides.
See `?scale_xaringan` for more details.

More details and examples can be found in `vignette("ggplot2-themes")`.







Quitting from lines 59-70 (./../man/fragments/_quick-intro.Rmd) 
Quitting from lines 59-70 (./../man/fragments/_quick-intro.Rmd) 
Error: processing vignette 'xaringanthemer.Rmd' failed with diagnostics:
there is no package called 'showtext'
--- failed re-building ‘xaringanthemer.Rmd’

SUMMARY: processing the following files failed:
  ‘ggplot2-themes.Rmd’ ‘xaringanthemer.Rmd’

Error: Vignette re-building failed.
Execution halted