## title: "References in R Markdown"
author: "Harald Schilly"
date: "`r Sys.Date()`

"
site: "bookdown::bookdown_site"
output:
bookdown::html_document2: default

# Introduction

Using RMarkdown's bookdown rendering, long documents with LaTeX-style references can be rendered.
More information here: bookdown: Authoring Books and Technical Documents with R Markdown

# Examples

## Example 1

Let's start with a simple Formula:

The equation @ref(eq:binom) is well known.

## Example 2

Another well known formula is the following:

```
For a right triangle, if $c$ denotes the length of the hypotenuse
and $a$ and $b$ denote the lengths of the other two sides, we have
\begin{equation}
a^2 + b^2 = c^2
(\#eq:pyth)
\end{equation}
```

Which is this equation:

# Fill up

A normal paragraph.

(ref:foo) A scatterplot of the data `cars`

using **base** R graphics.

```
plot(cars) # a scatterplot
```

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## Python code

```
library(reticulate)
use_python("/usr/bin/python3")
```

```
import numpy as np
import pandas as pd
x = np.random.randn(1000)
pd.Series(x).describe()
```

### Plotting with Python

```
import seaborn
seaborn.set('paper')
import numpy as np
import matplotlib.pyplot as plt
xx = np.linspace(0, 10, 100)
yy = np.exp(0.1 * -xx) * np.sin(2 * xx)
plt.plot(xx, yy)
plt.grid(True)
plt.show()
```

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# Testing reference links

First check if you know about theorem @ref(thm:pyth) with the formula @ref(eq:pyth), that famous equation @ref(eq:emc2) and then look up what @ref(eq:binom) is about!

... and don't forget the figure @ref(fig:foo)!

# More information