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      <h3 class="navbar-left"><strong>ggplot2</strong> extensions</h3>
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    ggplot2 now has an official extension mechanism. This means that others can now easily create their own stats, geoms and positions, and provide them in other packages. This should allow the ggplot2 community to flourish, even as less development work happens in ggplot2 itself. This page showcases these extensions.
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        <a href="ggiraph.html" class="list-group-item">
          <h5 class="list-group-item-heading">ggiraph</h5>
          <p class="list-group-item-text">Make ggplot interactive</p>
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          <p class="list-group-item-text">Accelarating ggplot2</p>
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          <p class="list-group-item-text">Extensions for radiation spectra</p>
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          <h5 class="list-group-item-heading">ggradar</h5>
          <p class="list-group-item-text">radar charts with ggplot2</p>
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          <h5 class="list-group-item-heading">ggTimeSeries</h5>
          <p class="list-group-item-text">Time series visualisations</p>
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          <h5 class="list-group-item-heading">ggtree</h5>
          <p class="list-group-item-text">A phylogenetic tree viewer</p>
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          <p class="list-group-item-text">Seasonal adjustment on the fly</p>
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<h3>ggradar</h3>
<p><a href="https://github.com/ricardo-bion/ggradar" class="uri">https://github.com/ricardo-bion/ggradar</a></p>
<p>ggradar allows you to build radar charts with ggplot2. This package is based on <a href="http://rstudio-pubs-static.s3.amazonaws.com/5795_e6e6411731bb4f1b9cc7eb49499c2082.html">Paul Williamson’s</a> code, with new aesthetics and compatibility with ggplot2 2.0.</p>
<p>It was inspired by <a href="http://www.buildingwidgets.com/blog/2015/12/9/week-49-d3radarr">d3radaR</a>, an htmlwidget built by <a href="https://github.com/timelyportfolio">timelyportfolio</a>.</p>
<pre class="r"><code># Example from https://github.com/ricardo-bion/ggradar
library(ggplot2)
library(ggradar)
suppressPackageStartupMessages(library(dplyr))
library(scales)

mtcars %&gt;%
     add_rownames( var = &quot;group&quot; ) %&gt;%
     mutate_each(funs(rescale), -group) %&gt;%
     tail(4) %&gt;% select(1:10) -&gt; mtcars_radar

ggradar(mtcars_radar) </code></pre>
<p><img src="ggradar_files/figure-html/unnamed-chunk-1-1.png" title="" alt="" width="1440" /></p>
<pre class="r"><code>knitr::kable(mtcars_radar,format=&quot;markdown&quot;) </code></pre>
<table>
<colgroup>
<col width="16%" />
<col width="11%" />
<col width="5%" />
<col width="11%" />
<col width="11%" />
<col width="11%" />
<col width="11%" />
<col width="11%" />
<col width="4%" />
<col width="4%" />
</colgroup>
<thead>
<tr class="header">
<th align="left">group</th>
<th align="right">mpg</th>
<th align="right">cyl</th>
<th align="right">disp</th>
<th align="right">hp</th>
<th align="right">drat</th>
<th align="right">wt</th>
<th align="right">qsec</th>
<th align="right">vs</th>
<th align="right">am</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td align="left">Ford Pantera L</td>
<td align="right">0.2297872</td>
<td align="right">1.0</td>
<td align="right">0.6981791</td>
<td align="right">0.7491166</td>
<td align="right">0.6728111</td>
<td align="right">0.4236768</td>
<td align="right">0.0000000</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
<tr class="even">
<td align="left">Ferrari Dino</td>
<td align="right">0.3957447</td>
<td align="right">0.5</td>
<td align="right">0.1843352</td>
<td align="right">0.4346290</td>
<td align="right">0.3963134</td>
<td align="right">0.3214012</td>
<td align="right">0.1190476</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
<tr class="odd">
<td align="left">Maserati Bora</td>
<td align="right">0.1957447</td>
<td align="right">1.0</td>
<td align="right">0.5734597</td>
<td align="right">1.0000000</td>
<td align="right">0.3594470</td>
<td align="right">0.5259524</td>
<td align="right">0.0119048</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
<tr class="even">
<td align="left">Volvo 142E</td>
<td align="right">0.4680851</td>
<td align="right">0.0</td>
<td align="right">0.1244699</td>
<td align="right">0.2014134</td>
<td align="right">0.6221198</td>
<td align="right">0.3239581</td>
<td align="right">0.4880952</td>
<td align="right">1</td>
<td align="right">1</td>
</tr>
</tbody>
</table>
<h4>Custom fonts</h4>
<p>This package requires the Airbnb font and the extrafont package.</p>
<pre class="r"><code># configured to work on a Mac, change directory to Unix or Windows
download.file(&quot;https://dl.dropboxusercontent.com/u/2364714/airbnb_ttf_fonts/Circular Air-Light 3.46.45 PM.ttf&quot;, &quot;/Library/Fonts/Circular Air-Light 3.46.45 PM.ttf&quot;, method=&quot;curl&quot;)

extrafont::font_import(pattern = &#39;Circular&#39;, prompt=FALSE)</code></pre>
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