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(This article was first published on <strong><a href="https://fronkonstin.com/2016/12/12/three-shiny-apps-to-celebrate-the-beauty-of-maths/"> R – Fronkonstin</a></strong>, and kindly contributed to <a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers)</a> </div>
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<blockquote><p>Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country (David Hilbert)</p>
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<p>One of the best decisions I took this year related with this blog was to move it to my own self-hosted domain using WordPress.org. It allows to me, for example, to embed dynamic JavaScript visualizations like <a target="_blank" rel="nofollow" href="https://fronkonstin.com/2016/10/04/visualizing-the-daily-variability-of-bitcoin-with-quandl-and-highcharts/">this one</a>. Another thing I can do now is to upload my Shiny Apps to share them with my readers. In this post I have gathered three Apps I made some time ago; you can play with them as well as get the code I wrote for each one:</p>
<ul>
<li><strong>The Harmonograph:</strong> This App simulates harmonograph drawings. An harmonograph is a mechanism which draws trajectories by means of two pendulums: one moves a pencil and the other one moves a platform with a piece of paper on it. Click <a target="_blank" rel="nofollow" href="http://91.134.134.147:3838/harmonograph2D/">here</a> to try it.</li>
<li><strong>Shiny Wool Skeins:</strong> This App, inspired by <a target="_blank" rel="nofollow" href="https://fronkonstin.com/2015/05/13/bertrand-or-the-importance-of-defining-problems-properly/">this post</a>, creates a plot consisting of chords inside a circle . You can change colors as well as the number and <em>quality</em> of the chords. Click <a target="_blank" rel="nofollow" href="http://91.134.134.147:3838/wool/">here</a> to try it.</li>
<li><strong>The Coaster Maker:</strong> With this App you can create your own coasters using <a target="_blank" rel="nofollow" href="https://en.wikipedia.org/wiki/Hypocycloid">hypocicloids</a>. Click <a target="_blank" rel="nofollow" href="http://91.134.134.147:3838/coaster/">here</a> to try it.</li>
</ul>
<p>I want to thank to my friend <a target="_blank" rel="nofollow" href="https://twitter.com/jayusor">Jorge</a>, without whom I would not have been able to make Shiny work in my server.</p>
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<div>To <strong>leave a comment</strong> for the author, please follow the link and comment on their blog: <strong><a href="https://fronkonstin.com/2016/12/12/three-shiny-apps-to-celebrate-the-beauty-of-maths/"> R – Fronkonstin</a></strong>.</div>
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