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<li class="chapter" data-level="1" data-path="index.html"><a href="index.html"><i class="fa fa-check"></i><b>1</b> Prerequisites</a></li>
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<li class="chapter" data-level="2.1" data-path="preamble-and-some-demonstration-functions.html"><a href="preamble-and-some-demonstration-functions.html#first-were-going-to-load-libraries"><i class="fa fa-check"></i><b>2.1</b> First, we’re going to load libraries</a></li>
<li class="chapter" data-level="2.2" data-path="preamble-and-some-demonstration-functions.html"><a href="preamble-and-some-demonstration-functions.html#garmin"><i class="fa fa-check"></i><b>2.2</b> Garmin</a></li>
<li class="chapter" data-level="2.3" data-path="preamble-and-some-demonstration-functions.html"><a href="preamble-and-some-demonstration-functions.html#text-mining-demo"><i class="fa fa-check"></i><b>2.3</b> Text mining demo</a></li>
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<div id="preamble-and-some-demonstration-functions" class="section level1" number="2">
<h1><span class="header-section-number">2</span> Preamble and some demonstration functions</h1>
<p>This is an <a href="http://rmarkdown.rstudio.com">R Markdown</a> Notebook. When you execute code within the notebook, the results appear beneath the code.</p>
<p>Try executing this chunk by clicking the <em>Run</em> button within the chunk or by placing your cursor inside it and pressing <em>Ctrl+Shift+Enter</em>.</p>
<div id="first-were-going-to-load-libraries" class="section level2" number="2.1">
<h2><span class="header-section-number">2.1</span> First, we’re going to load libraries</h2>
<p>Normally you’d hide the code chunk below, but in this instance we’ll keep it there.</p>
<div class="sourceCode" id="cb2"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb2-1"><a href="preamble-and-some-demonstration-functions.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(tidyverse) <span class="co">#loads ggplot2, stringr,</span></span>
<span id="cb2-2"><a href="preamble-and-some-demonstration-functions.html#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="co">#Installing tidyverse includes (but won't load as part of it) readxl, jsonlite, lubridate, httr, rvest, xml2, googlesheets4, </span></span>
<span id="cb2-3"><a href="preamble-and-some-demonstration-functions.html#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(readxl)</span>
<span id="cb2-4"><a href="preamble-and-some-demonstration-functions.html#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(jsonlite)</span>
<span id="cb2-5"><a href="preamble-and-some-demonstration-functions.html#cb2-5" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(lubridate)</span>
<span id="cb2-6"><a href="preamble-and-some-demonstration-functions.html#cb2-6" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(httr)</span>
<span id="cb2-7"><a href="preamble-and-some-demonstration-functions.html#cb2-7" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-8"><a href="preamble-and-some-demonstration-functions.html#cb2-8" aria-hidden="true" tabindex="-1"></a><span class="co">#these are also useful (in part to demonstrate features)</span></span>
<span id="cb2-9"><a href="preamble-and-some-demonstration-functions.html#cb2-9" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(psych)</span>
<span id="cb2-10"><a href="preamble-and-some-demonstration-functions.html#cb2-10" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(doBy)</span>
<span id="cb2-11"><a href="preamble-and-some-demonstration-functions.html#cb2-11" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(reshape2)</span>
<span id="cb2-12"><a href="preamble-and-some-demonstration-functions.html#cb2-12" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(lattice)</span>
<span id="cb2-13"><a href="preamble-and-some-demonstration-functions.html#cb2-13" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(scales)</span>
<span id="cb2-14"><a href="preamble-and-some-demonstration-functions.html#cb2-14" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(tidytext)</span>
<span id="cb2-15"><a href="preamble-and-some-demonstration-functions.html#cb2-15" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-16"><a href="preamble-and-some-demonstration-functions.html#cb2-16" aria-hidden="true" tabindex="-1"></a><span class="co">#SimComp lets me create some random datasets with defined properties</span></span>
<span id="cb2-17"><a href="preamble-and-some-demonstration-functions.html#cb2-17" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(SimComp) </span>
<span id="cb2-18"><a href="preamble-and-some-demonstration-functions.html#cb2-18" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-19"><a href="preamble-and-some-demonstration-functions.html#cb2-19" aria-hidden="true" tabindex="-1"></a><span class="co">#The ones below are specifically for this data</span></span>
<span id="cb2-20"><a href="preamble-and-some-demonstration-functions.html#cb2-20" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(dslabs)</span>
<span id="cb2-21"><a href="preamble-and-some-demonstration-functions.html#cb2-21" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(trackeR)</span>
<span id="cb2-22"><a href="preamble-and-some-demonstration-functions.html#cb2-22" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(trackeRapp)</span>
<span id="cb2-23"><a href="preamble-and-some-demonstration-functions.html#cb2-23" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-24"><a href="preamble-and-some-demonstration-functions.html#cb2-24" aria-hidden="true" tabindex="-1"></a><span class="co">#library(maptools)</span></span>
<span id="cb2-25"><a href="preamble-and-some-demonstration-functions.html#cb2-25" aria-hidden="true" tabindex="-1"></a><span class="co">#library(revgeo)</span></span></code></pre></div>
<p>Add a new chunk by clicking the <em>Insert Chunk</em> button on the toolbar or by pressing <em>Ctrl+Alt+I</em>.</p>
<p>When you save the notebook, an HTML file containing the code and output will be saved alongside it (click the <em>Preview</em> button or press <em>Ctrl+Shift+K</em> to preview the HTML file).</p>
<p>The preview shows you a rendered HTML copy of the contents of the editor. Consequently, unlike <em>Knit</em>, <em>Preview</em> does not run any R code chunks. Instead, the output of the chunk when it was last run in the editor is displayed.</p>
</div>
<div id="garmin" class="section level2" number="2.2">
<h2><span class="header-section-number">2.2</span> Garmin</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb3-1"><a href="preamble-and-some-demonstration-functions.html#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="co">#uses the library trackeR. See vignette at https://cran.r-project.org/web/packages/trackeR/vignettes/TourDetrackeR.html - read for detail</span></span>
<span id="cb3-2"><a href="preamble-and-some-demonstration-functions.html#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="co">#First we're going to load some dummy data. </span></span>
<span id="cb3-3"><a href="preamble-and-some-demonstration-functions.html#cb3-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-4"><a href="preamble-and-some-demonstration-functions.html#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="co">#to do this with your own data, you'll need to use the function read_container</span></span>
<span id="cb3-5"><a href="preamble-and-some-demonstration-functions.html#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="co">#TO DO THAT YOU SHOULD UNCOMMENT THE FOLLOWING TWO LINES</span></span>
<span id="cb3-6"><a href="preamble-and-some-demonstration-functions.html#cb3-6" aria-hidden="true" tabindex="-1"></a><span class="co">#BUT FOR THE PURPOSES OF THIS DEMO I'M JUST GOING TO IMPORT THE PACKAGE DATA</span></span>
<span id="cb3-7"><a href="preamble-and-some-demonstration-functions.html#cb3-7" aria-hidden="true" tabindex="-1"></a><span class="co">#filepath <- "private/your_Garmin_export.TCX.gz"</span></span>
<span id="cb3-8"><a href="preamble-and-some-demonstration-functions.html#cb3-8" aria-hidden="true" tabindex="-1"></a><span class="co">#runDF <- read_container(filepath, type = "tcx", timezone = "GMT") #check other options</span></span>
<span id="cb3-9"><a href="preamble-and-some-demonstration-functions.html#cb3-9" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-10"><a href="preamble-and-some-demonstration-functions.html#cb3-10" aria-hidden="true" tabindex="-1"></a><span class="do">##################################################</span></span>
<span id="cb3-11"><a href="preamble-and-some-demonstration-functions.html#cb3-11" aria-hidden="true" tabindex="-1"></a><span class="do">##################################################</span></span>
<span id="cb3-12"><a href="preamble-and-some-demonstration-functions.html#cb3-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-13"><a href="preamble-and-some-demonstration-functions.html#cb3-13" aria-hidden="true" tabindex="-1"></a>runDF <span class="ot"><-</span> <span class="fu">data</span>(runs)</span>
<span id="cb3-14"><a href="preamble-and-some-demonstration-functions.html#cb3-14" aria-hidden="true" tabindex="-1"></a><span class="fu">plot</span>(runs, <span class="at">session =</span> <span class="dv">1</span><span class="sc">:</span><span class="dv">7</span>)</span></code></pre></div>
<p><img src="36100-Data-Science-for-Innovation_files/figure-html/garmin-1.png" width="672" /></p>
</div>
<div id="text-mining-demo" class="section level2" number="2.3">
<h2><span class="header-section-number">2.3</span> Text mining demo</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb4-1"><a href="preamble-and-some-demonstration-functions.html#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="co">#using https://rafalab.github.io/dsbook/text-mining.html</span></span>
<span id="cb4-2"><a href="preamble-and-some-demonstration-functions.html#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-3"><a href="preamble-and-some-demonstration-functions.html#cb4-3" aria-hidden="true" tabindex="-1"></a>tweets <span class="ot"><-</span> <span class="fu">data</span>(<span class="st">"trump_tweets"</span>) <span class="co">#from the dslabs library</span></span></code></pre></div>
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