3  Summary

In summary, this book has no content whatsoever.

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3.1 Section 1

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library(ggridges)
Warning: package 'ggridges' was built under R version 4.1.3
library(ggplot2)
Warning: package 'ggplot2' was built under R version 4.1.3
# Diamonds dataset is provided by R natively
#head(diamonds)
 
# basic example
ggplot(diamonds, aes(x = price, y = cut, fill = cut)) +
  geom_density_ridges() +
  theme_ridges() + 
  theme(legend.position = "none")
Picking joint bandwidth of 458

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3.1.1 Subection 1-1

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Suspendisse sed nisi lacus sed viverra tellus in. Pretium quam vulputate dignissim suspendisse in est ante in. Augue eget arcu dictum varius duis at. Sed arcu non odio euismod. Volutpat diam ut venenatis tellus in. Turpis nunc eget lorem dolor sed viverra ipsum nunc. Purus viverra accumsan in nisl nisi scelerisque eu. Vel quam elementum pulvinar etiam non. Auctor augue mauris augue neque. Sed arcu non odio euismod. Natoque penatibus et magnis dis. In ante metus dictum at. Risus viverra adipiscing at in tellus.

3.2 Margin Text

3.2.1 Margin Figures

Figures that you create using code cells can be placed in the margin by using the column: margin code cell option. If the code produces more than one figure, each of the figures will be placed in the margin.

```{r}
#| label: fig-mtcars
#| fig-cap: "MPG vs horsepower, colored by transmission."
#| column: margin

library(ggplot2)
mtcars2 <- mtcars
mtcars2$am <- factor(
  mtcars$am, labels = c('automatic', 'manual')
)
ggplot(mtcars2, aes(hp, mpg, color = am)) +
  geom_point() +
  geom_smooth(formula = y ~ x, method = "loess") +
  theme(legend.position = 'bottom')
```

Figure 3.1: MPG vs horsepower, colored by transmission.

3.2.2 Margin Tables

You an also place tables in the margin of your document by specifying column: margin.

```{r}
#| column: margin

knitr::kable(
  mtcars[1:3, 1:3]
)
```
mpg cyl disp
Mazda RX4 21.0 6 160
Mazda RX4 Wag 21.0 6 160
Datsun 710 22.8 4 108

3.2.3 Other Content

You can also place content in the margin by targeting the margin column using a div with the .column-margin class. For example:

::: {.column-margin}
We know from *the first fundamental theorem of calculus* that for $x$ in $[a, b]$:

$$\frac{d}{dx}\left( \int_{a}^{x} f(u)\,du\right)=f(x).$$
:::

We know from the first fundamental theorem of calculus that for \(x\) in \([a, b]\):

\[\frac{d}{dx}\left( \int_{a}^{x} f(u)\,du\right)=f(x).\]

3.2.4 Margin References

Footnotes and the bibliography typically appear at the end of the document, but you can choose to have them placed in the margin by setting the following option[^1] in the document front matter:

---
reference-location: margin
citation-location: margin
---

With these options set, footnotes and citations will (respectively) be automatically be placed in the margin of the document rather than the bottom of the page.

For example, according to Service (2022) 501(c)(3) organizations indicate which exempt purpose(s) they advance when they file Form 1023 or 1023-EZ to apply for recognition of exemption from federal income tax (aka “tax-exempt status”) (Service 2014, 2020).

———. 2022. “Schedule a (Form 990): Public Charity Status and Public Support.” Washington, DC. https://www.irs.gov/pub/irs-pdf/f990sa.pdf.
Service, Internal Revenue. 2014. “Form 1023-EZ: Streamlined Application for Recognition of Exemption Under Section 501(c)(3) of the Internal Revenue Code.” Washington, DC. https://www.irs.gov/pub/irs-prior/f1023ez--2014.pdf.
———. 2020. “Form 1023: Application for Recognition of Exemption Under Section 501(c)(3) of the Internal Revenue Code.” Washington, DC. https://www.pay.gov/public/form/preview/pdf/104.

3.2.5 Asides

Asides allow you to place content aside from the content it is placed in. Asides look like footnotes, but do not include the footnote mark (the superscript number).

This is a span that has the class aside which places it in the margin without a footnote number.
[This is a span that has the class aside which places it in the margin without a footnote number.]{.aside}

3.2.6 Margin Captions

For figures and tables, you may leave the content in the body of the document while placing the caption in the margin of the document. Using cap-location: margin in a code cell or document front matter to control this. For example:

```{r}
#| label: fig-cap-margin
#| fig-cap: "MPG vs horsepower, colored by transmission."
#| cap-location: margin

library(ggplot2)
mtcars2 <- mtcars
mtcars2$am <- factor(
  mtcars$am, labels = c('automatic', 'manual')
)
ggplot(mtcars2, aes(hp, mpg, color = am)) +
  geom_point() +
  geom_smooth(formula = y ~ x, method = "loess") +
  theme(legend.position = 'bottom')
```

Figure 3.2: MPG vs horsepower, colored by transmission.

3.3 Section 2

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qplot( data=d3, x=as.numeric(as.character(hour)), y=harm ) + 
  geom_line( color="steelblue", size=0.8 ) + 
  geom_point( color="darkblue", size=3 ) + 
  geom_hline( yintercept=mean.harm, color="black" ) + 
  facet_wrap( ~ age, ncol=4 ) + 
  xlab("Time of Day (24hrs)") + ylab("Rate of Harm") +
  ggtitle("Proportion of Accidents Resulting in Harm") +
  # theme_fivethirtyeight() 
  theme_wsj( base_size=10, color="gray" )

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An informative figure capture here.

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3.4 Citation Style

See the citation style guide:

Markdown Format Output (default Chicago Style) Output (custom csi)
Blah Blah (see knuth1984?; also wickham2015?) Blah Blah (see Knuth 1984, 33–35; also Wickham 2015, chap. 1) Blah Blah see [1], pp. 33-35; also [1], chap. 1
Blah Blah (knuth1984? and passim) Blah Blah (Knuth 1984, 33–35, 38–39 and passim) Blah Blah [1], pp. 33-35, 38-39 and passim
Blah Blah (wickham2015?; knuth1984?). Blah Blah (Wickham 2015; Knuth 1984). Blah Blah [1, 2].
Wickham says blah (wickham2015?) Wickham says blah (2015) Wickham says blah [1]
(knuth1984?) says blah. Knuth (1984) says blah. [1] says blah.
(knuth1984?) says blah. Knuth (1984, 33) says blah. [1] [p. 33] says blah.