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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
<head>
<title>xaringan tip:</title>
<meta charset="utf-8" />
<meta name="author" content="Garrick Aden-Buie" />
<meta name="date" content="2019-10-16" />
<link href="libs/remark-css/default.css" rel="stylesheet" />
<link href="libs/remark-css/default-fonts.css" rel="stylesheet" />
</head>
<body>
<textarea id="source">
class: center, middle, inverse, title-slide
# xaringan tip:
## add a logo to all the slides
### Garrick Aden-Buie
### <a href='https://www.garrickadenbuie.com/blog/xaringan-tip-logo-all-slides'>garrickadenbuie.com/blog/xaringan-tip-logo-all-slides</a>
### 2019-10-16
---
## Prepare your logo and slides
1. Download your logo. I've used the `xaringan` hex logo: [`xaringan.png`](https://github.com/rstudio/hex-stickers/blob/master/PNG/xaringan.png)
1. Download [`insert-logo.html`](https://github.com/gadenbuie/xaringan-logo/blob/master/insert-logo.html)
1. Add `insert-logo.html` to your `after_body` includes
```yaml
output:
xaringan::moon_reader:
includes:
after_body: insert-logo.html
```
1. Edit the `.logo` class in the CSS in `insert-logo.html` to use your logo,
and adjust the `width`, `height` and position (`top`, `bottom`, `left`, and/or `right`) as needed<sup>*</sup>.
1. Use `class: hide-logo` to hide your logo on individual slides.
.footnote[
<sup>*</sup>Using the _Infinite Moon Reader_ can help here, but you have to save your slide file to trigger a full refresh when you edit `insert-logo.html`.
]
---
background-image: url(https://upload.wikimedia.org/wikipedia/commons/b/be/Sharingan_triple.svg)
???
Image credit: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Sharingan_triple.svg)
---
class: center, middle
# xaringan
### /ʃaː.'riŋ.ɡan/
---
class: inverse, center, middle
# Get Started
---
# Hello World
Install the **xaringan** package from [Github](https://github.com/yihui/xaringan):
```r
devtools::install_github("yihui/xaringan")
```
--
You are recommended to use the [RStudio IDE](https://www.rstudio.com/products/rstudio/), but you do not have to.
- Create a new R Markdown document from the menu `File -> New File -> R Markdown -> From Template -> Ninja Presentation`;<sup>1</sup>
--
- Click the `Knit` button to compile it;
--
- or use the [RStudio Addin](https://rstudio.github.io/rstudioaddins/)<sup>2</sup> "Infinite Moon Reader" to live preview the slides (every time you update and save the Rmd document, the slides will be automatically reloaded in RStudio Viewer.
.footnote[
[1] 中文用户请看[这份教程](http://slides.yihui.name/xaringan/zh-CN.html)
[2] See [#2](https://github.com/yihui/xaringan/issues/2) if you do not see the template or addin in RStudio.
]
---
background-image: url(https://github.com/yihui/xaringan/releases/download/v0.0.2/karl-moustache.jpg)
background-position: 50% 50%
class: center, bottom, inverse
# You only live once!
---
# Hello Ninja
As a presentation ninja, you certainly should not be satisfied by the "Hello World" example. You need to understand more about two things:
1. The [remark.js](https://remarkjs.com) library;
1. The **xaringan** package;
Basically **xaringan** injected the chakra of R Markdown (minus Pandoc) into **remark.js**. The slides are rendered by remark.js in the web browser, and the Markdown source needed by remark.js is generated from R Markdown (**knitr**).
---
# remark.js
You can see an introduction of remark.js from [its homepage](https://remarkjs.com). You should read the [remark.js Wiki](https://github.com/gnab/remark/wiki) at least once to know how to
- create a new slide (Markdown syntax<sup>*</sup> and slide properties);
- format a slide (e.g. text alignment);
- configure the slideshow;
- and use the presentation (keyboard shortcuts).
It is important to be familiar with remark.js before you can understand the options in **xaringan**.
.footnote[[*] It is different with Pandoc's Markdown! It is limited but should be enough for presentation purposes. Come on... You do not need a slide for the Table of Contents! Well, the Markdown support in remark.js [may be improved](https://github.com/gnab/remark/issues/142) in the future.]
---
background-image: url(https://github.com/yihui/xaringan/releases/download/v0.0.2/karl-moustache.jpg)
background-size: cover
class: center, bottom, inverse
# I was so happy to have discovered remark.js!
</textarea>
<style data-target="print-only">@media screen {.remark-slide-container{display:block;}.remark-slide-scaler{box-shadow:none;}}</style>
<script src="https://remarkjs.com/downloads/remark-latest.min.js"></script>
<script>var slideshow = remark.create({
"highlightStyle": "github",
"highlightLines": true,
"countIncrementalSlides": true
});
if (window.HTMLWidgets) slideshow.on('afterShowSlide', function (slide) {
window.dispatchEvent(new Event('resize'));
});
(function(d) {
var s = d.createElement("style"), r = d.querySelector(".remark-slide-scaler");
if (!r) return;
s.type = "text/css"; s.innerHTML = "@page {size: " + r.style.width + " " + r.style.height +"; }";
d.head.appendChild(s);
})(document);
(function(d) {
var el = d.getElementsByClassName("remark-slides-area");
if (!el) return;
var slide, slides = slideshow.getSlides(), els = el[0].children;
for (var i = 1; i < slides.length; i++) {
slide = slides[i];
if (slide.properties.continued === "true" || slide.properties.count === "false") {
els[i - 1].className += ' has-continuation';
}
}
var s = d.createElement("style");
s.type = "text/css"; s.innerHTML = "@media print { .has-continuation { display: none; } }";
d.head.appendChild(s);
})(document);
// delete the temporary CSS (for displaying all slides initially) when the user
// starts to view slides
(function() {
var deleted = false;
slideshow.on('beforeShowSlide', function(slide) {
if (deleted) return;
var sheets = document.styleSheets, node;
for (var i = 0; i < sheets.length; i++) {
node = sheets[i].ownerNode;
if (node.dataset["target"] !== "print-only") continue;
node.parentNode.removeChild(node);
}
deleted = true;
});
})();
// adds .remark-code-has-line-highlighted class to <pre> parent elements
// of code chunks containing highlighted lines with class .remark-code-line-highlighted
(function(d) {
const hlines = d.querySelectorAll('.remark-code-line-highlighted');
const preParents = [];
const findPreParent = function(line, p = 0) {
if (p > 1) return null; // traverse up no further than grandparent
const el = line.parentElement;
return el.tagName === "PRE" ? el : findPreParent(el, ++p);
};
for (let line of hlines) {
let pre = findPreParent(line);
if (pre && !preParents.includes(pre)) preParents.push(pre);
}
preParents.forEach(p => p.classList.add("remark-code-has-line-highlighted"));
})(document);</script>
<style>
.logo {
background-image: url(xaringan.png);
background-size: contain;
background-repeat: no-repeat;
position: absolute;
top: 1em;
right: 1em;
width: 110px;
height: 128px;
z-index: 0;
}
</style>
<script>
document
.querySelectorAll(
'.remark-slide-content' +
':not(.title-slide)' +
// add additional classes to exclude here, e.g.
// ':not(.inverse)' +
':not(.hide-logo)'
)
.forEach(el => {
el.innerHTML += '<div class="logo"></div>';
});
</script>
<script>
(function() {
var links = document.getElementsByTagName('a');
for (var i = 0; i < links.length; i++) {
if (/^(https?:)?\/\//.test(links[i].getAttribute('href'))) {
links[i].target = '_blank';
}
}
})();
</script>
<script>
slideshow._releaseMath = function(el) {
var i, text, code, codes = el.getElementsByTagName('code');
for (i = 0; i < codes.length;) {
code = codes[i];
if (code.parentNode.tagName !== 'PRE' && code.childElementCount === 0) {
text = code.textContent;
if (/^\\\((.|\s)+\\\)$/.test(text) || /^\\\[(.|\s)+\\\]$/.test(text) ||
/^\$\$(.|\s)+\$\$$/.test(text) ||
/^\\begin\{([^}]+)\}(.|\s)+\\end\{[^}]+\}$/.test(text)) {
code.outerHTML = code.innerHTML; // remove <code></code>
continue;
}
}
i++;
}
};
slideshow._releaseMath(document);
</script>
<!-- dynamically load mathjax for compatibility with self-contained -->
<script>
(function () {
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-MML-AM_CHTML';
if (location.protocol !== 'file:' && /^https?:/.test(script.src))
script.src = script.src.replace(/^https?:/, '');
document.getElementsByTagName('head')[0].appendChild(script);
})();
</script>
</body>
</html>