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😎 Give your xaringan slides some style
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  53. Color and fill single-color scales for discrete and continuous values,

  54. created using the primary accent color of the xaringanthemer styles." />

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  162.     <div class="page-header">

  163.     <h1>Xaringan Themer ggplot2 Scales</h1>

  164.     <small class="dont-index">Source: <a href='https://github.com/gadenbuie/xaringanthemer/blob/master/R/ggplot2.R'><code>R/ggplot2.R</code></a></small>

  165.     <div class="hidden name"><code>scale_xaringan.Rd</code></div>

  166.     </div>

  167. 

  168.     <div class="ref-description">

  169.     <p><strong>Lifecycle:</strong> <a href='https://www.tidyverse.org/lifecycle/#maturing'>Maturing</a></p>

  170. <p>Color and fill single-color scales for discrete and continuous values,

  171. created using the primary accent color of the xaringanthemer styles.</p>

  172.     </div>

  173. 

  174.     <pre class="usage"><span class='fu'>scale_xaringan_discrete</span>(

  175.   <span class='kw'>aes_type</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"color"</span>, <span class='st'>"colour"</span>, <span class='st'>"fill"</span>),

  176.   <span class='no'>...</span>,

  177.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  178.   <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  179.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  180. )

  181. 

  182. <span class='fu'>scale_xaringan_fill_discrete</span>(<span class='no'>...</span>, <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>, <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)

  183. 

  184. <span class='fu'>scale_xaringan_color_discrete</span>(

  185.   <span class='no'>...</span>,

  186.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  187.   <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  188.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  189. )

  190. 

  191. <span class='fu'>scale_xaringan_colour_discrete</span>(

  192.   <span class='no'>...</span>,

  193.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  194.   <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  195.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  196. )

  197. 

  198. <span class='fu'>scale_xaringan_continuous</span>(

  199.   <span class='kw'>aes_type</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"color"</span>, <span class='st'>"colour"</span>, <span class='st'>"fill"</span>),

  200.   <span class='no'>...</span>,

  201.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  202.   <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,

  203.   <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  204.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  205. )

  206. 

  207. <span class='fu'>scale_xaringan_fill_continuous</span>(

  208.   <span class='no'>...</span>,

  209.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  210.   <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,

  211.   <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  212.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  213. )

  214. 

  215. <span class='fu'>scale_xaringan_color_continuous</span>(

  216.   <span class='no'>...</span>,

  217.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  218.   <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,

  219.   <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  220.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  221. )

  222. 

  223. <span class='fu'>scale_xaringan_colour_continuous</span>(

  224.   <span class='no'>...</span>,

  225.   <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,

  226.   <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,

  227.   <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,

  228.   <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>

  229. )</pre>

  230. 

  231.     <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>

  232.     <table class="ref-arguments">

  233.     <colgroup><col class="name" /><col class="desc" /></colgroup>

  234.     <tr>

  235.       <th>aes_type</th>

  236.       <td><p>The type of aesthetic to which the scale is being applied.

  237. One of "color", "colour", or "fill".</p></td>

  238.     </tr>

  239.     <tr>

  240.       <th>...</th>

  241.       <td><p>Arguments passed on to either the <span class="pkg">colorspace</span> scale

  242. functions — one of <a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_discrete_sequential.html'>colorspace::scale_color_discrete_sequential</a>,

  243. <a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_continuous_sequential.html'>colorspace::scale_color_continuous_sequential</a>,

  244. <a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_discrete_sequential.html'>colorspace::scale_fill_discrete_sequential</a>, or

  245. <a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_continuous_sequential.html'>colorspace::scale_fill_continuous_sequential</a> — or to

  246. <a href='https://ggplot2.tidyverse.org/reference/continuous_scale.html'>ggplot2::continuous_scale</a> or <a href='https://ggplot2.tidyverse.org/reference/discrete_scale.html'>ggplot2::discrete_scale</a>.</p></td>

  247.     </tr>

  248.     <tr>

  249.       <th>color</th>

  250.       <td><p>A color value, in hex, to override the default color. Otherwise,

  251. the primary color of the resulting scale is chosen from the xaringanthemer

  252. slide styles.</p></td>

  253.     </tr>

  254.     <tr>

  255.       <th>direction</th>

  256.       <td><p>Direction of the discrete scale. Use values less than 0 to

  257. reverse the direction, e.g. <code>direction = -1</code>.</p></td>

  258.     </tr>

  259.     <tr>

  260.       <th>inverse</th>

  261.       <td><p>If <code>color</code> is not supplied and <code>inverse = TRUE</code>, a primary

  262. color is chosen to work well with the inverse slide styles, namely the

  263. value of <code>inverse_header_color</code></p></td>

  264.     </tr>

  265.     <tr>

  266.       <th>begin</th>

  267.       <td><p>Number in the range of <code>[0, 1]</code> indicating to which point in the color scale the smallest data value should be mapped.</p></td>

  268.     </tr>

  269.     <tr>

  270.       <th>end</th>

  271.       <td><p>Number in the range of <code>[0, 1]</code> indicating to which point in the color scale the largest data value should be mapped.</p></td>

  272.     </tr>

  273.     </table>

  274. 

  275. 

  276.     <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>

  277.     <pre class="examples"><div class='input'><span class='co'># Requires ggplot2</span>

  278. <span class='no'>has_ggplot2</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/ns-load.html'>requireNamespace</a></span>(<span class='st'>"ggplot2"</span>, <span class='kw'>quietly</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>)

  279. 

  280. <span class='kw'>if</span> (<span class='no'>has_ggplot2</span>) {

  281.   <span class='fu'><a href='https://rdrr.io/r/base/library.html'>library</a></span>(<span class='no'>ggplot2</span>)

  282.   <span class='co'># Saving the theme to a temp file because this is an example</span>

  283.   <span class='no'>path_to_css_file</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/tempfile.html'>tempfile</a></span>(<span class='kw'>fileext</span> <span class='kw'>=</span> <span class='st'>".css"</span>)

  284. 

  285.   <span class='co'># Create the xaringan theme: dark blue background with teal green accents</span>

  286.   <span class='fu'><a href='style_duo.html'>style_duo</a></span>(

  287.     <span class='kw'>primary_color</span> <span class='kw'>=</span> <span class='st'>"#002b36"</span>,

  288.     <span class='kw'>secondary_color</span> <span class='kw'>=</span> <span class='st'>"#31b09e"</span>,

  289.     <span class='co'># Using basic fonts for this example, but the plot theme will</span>

  290.     <span class='co'># automatically use your theme font if you use Google fonts</span>

  291.     <span class='kw'>text_font_family</span> <span class='kw'>=</span> <span class='st'>"sans"</span>,

  292.     <span class='kw'>header_font_family</span> <span class='kw'>=</span> <span class='st'>"serif"</span>,

  293.     <span class='kw'>outfile</span> <span class='kw'>=</span> <span class='no'>path_to_css_file</span>

  294.   )

  295. 

  296.   <span class='co'># Here's some very basic example data</span>

  297.   <span class='no'>ex</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/data.frame.html'>data.frame</a></span>(

  298.     <span class='kw'>name</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"Couple"</span>, <span class='st'>"Few"</span>, <span class='st'>"Lots"</span>, <span class='st'>"Many"</span>),

  299.     <span class='kw'>n</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>2</span>, <span class='fl'>3</span>, <span class='fl'>5</span>, <span class='fl'>7</span>)

  300.   )

  301. 

  302.   <span class='co'># Fill color scales demo</span>

  303.   <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/ggplot.html'>ggplot</a></span>(<span class='no'>ex</span>) +

  304.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/aes.html'>aes</a></span>(<span class='no'>name</span>, <span class='no'>n</span>, <span class='kw'>fill</span> <span class='kw'>=</span> <span class='no'>n</span>) +

  305.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/geom_bar.html'>geom_col</a></span>() +

  306.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/labs.html'>ggtitle</a></span>(<span class='st'>"Matching fill scales"</span>) +

  307.     <span class='co'># themed to match the slides: dark blue background with teal text</span>

  308.     <span class='fu'><a href='theme_xaringan.html'>theme_xaringan</a></span>() +

  309.     <span class='co'># Fill color matches teal text</span>

  310.     <span class='fu'>scale_xaringan_fill_continuous</span>()

  311. 

  312.   <span class='co'># Color scales demo</span>

  313.   <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/ggplot.html'>ggplot</a></span>(<span class='no'>ex</span>) +

  314.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/aes.html'>aes</a></span>(<span class='no'>name</span>, <span class='kw'>y</span> <span class='kw'>=</span> <span class='fl'>1</span>, <span class='kw'>color</span> <span class='kw'>=</span> <span class='no'>name</span>) +

  315.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/geom_point.html'>geom_point</a></span>(<span class='kw'>size</span> <span class='kw'>=</span> <span class='fl'>10</span>) +

  316.     <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/labs.html'>ggtitle</a></span>(<span class='st'>"Matching color scales"</span>) +

  317.     <span class='co'># themed to match the slides: dark blue background with teal text</span>

  318.     <span class='fu'><a href='theme_xaringan.html'>theme_xaringan</a></span>() +

  319.     <span class='co'># Fill color matches teal text</span>

  320.     <span class='fu'>scale_xaringan_color_discrete</span>(<span class='kw'>direction</span> <span class='kw'>=</span> -<span class='fl'>1</span>)

  321. }</div><div class='img'><img src='scale_xaringan-1.png' alt='' width='700' height='433' /></div><div class='input'>

  322. </div></pre>

  323.   </div>

  324.   <div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">

  325.     <nav id="toc" data-toggle="toc" class="sticky-top">

  326.       <h2 data-toc-skip>Contents</h2>

  327.     </nav>

  328.   </div>

  329. </div>

  330. 

  331. 

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  333.       <div class="copyright">

  334.   <p>Developed by <a href='https://www.garrickadenbuie.com'>Garrick Aden-Buie</a>.</p>

  335. </div>

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