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Here is a application to <a href="area-chart.html">area chart</a>, using both the <code>plot_ly()</code> and <code>ggplotly()</code> functions.</p></center> <div style="text-align:center"> <a class="btn btn-secondary btn-xl text-uppercase js-scroll-trigger" href='area-chart.html'>Area chart Section</a> <a class="btn btn-secondary btn-xl text-uppercase js-scroll-trigger" href='https://www.data-to-viz.com/graph/area.html'>About area chart</a> </div> </div> </header> <!-- STYLE for chart pages but not the rest of tthe website --> <style> img { margin-top: 20px; } </style> <div class="container"> <h1 id="using-the-ggplotly-function">Using the <code>ggplotly()</code> function</h1> <hr /> <div class="row"> <div class="col-md-6 col-sm-12 align-self-center"> <p>This post follows the previous <a href="164-area-chart-ggplot2.html">basic area chart</a> built with <a href="ggplot2.html">ggplot2</a>.</p> <p>The idea is to turn the chart interactive:</p> <ul> <li>You can zoom by selecting an area of interest</li> <li>Hover the line to get exact time and value</li> <li>Export to png</li> <li>Slide axis</li> <li>Double click to re-initialize.</li> </ul> <p>This is done thanks to the <code>ggplotly()</code> function of the <code>plotly</code> package that turn any <code>ggplot2</code> chart object interactive.</p> </div> <div class="col-md-6 col-sm-12"> <center> <iframe src="HtmlWidget/ggplotlyAreachart.html" height="700" width="700" style="border:none;"> </iframe> </center> </div> </div> <div class="sourceCode" id="cb1"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb1-1" data-line-number="1"><span class="co"># Libraries</span></a> <a class="sourceLine" id="cb1-2" data-line-number="2"><span class="kw">library</span>(ggplot2)</a> <a class="sourceLine" id="cb1-3" data-line-number="3"><span class="kw">library</span>(dplyr)</a> <a class="sourceLine" id="cb1-4" data-line-number="4"><span class="kw">library</span>(plotly)</a> <a class="sourceLine" id="cb1-5" data-line-number="5"><span class="kw">library</span>(hrbrthemes)</a> <a class="sourceLine" id="cb1-6" data-line-number="6"></a> <a class="sourceLine" id="cb1-7" data-line-number="7"><span class="co"># Load dataset from github</span></a> <a class="sourceLine" id="cb1-8" data-line-number="8">data <-<span class="st"> </span><span class="kw">read.table</span>(<span class="st">"https://raw.githubusercontent.com/holtzy/data_to_viz/master/Example_dataset/3_TwoNumOrdered.csv"</span>, <span class="dt">header=</span>T)</a> <a class="sourceLine" id="cb1-9" data-line-number="9">data<span class="op">$</span>date <-<span class="st"> </span><span class="kw">as.Date</span>(data<span class="op">$</span>date)</a> <a class="sourceLine" id="cb1-10" data-line-number="10"></a> <a class="sourceLine" id="cb1-11" data-line-number="11"><span class="co"># Usual area chart</span></a> <a class="sourceLine" id="cb1-12" data-line-number="12">p <-<span class="st"> </span>data <span class="op">%>%</span></a> <a class="sourceLine" id="cb1-13" data-line-number="13"><span class="st"> </span><span class="kw">ggplot</span>( <span class="kw">aes</span>(<span class="dt">x=</span>date, <span class="dt">y=</span>value)) <span class="op">+</span></a> <a class="sourceLine" id="cb1-14" data-line-number="14"><span class="st"> </span><span class="kw">geom_area</span>(<span class="dt">fill=</span><span class="st">"#69b3a2"</span>, <span class="dt">alpha=</span><span class="fl">0.5</span>) <span class="op">+</span></a> <a class="sourceLine" id="cb1-15" data-line-number="15"><span class="st"> </span><span class="kw">geom_line</span>(<span class="dt">color=</span><span class="st">"#69b3a2"</span>) <span class="op">+</span></a> <a class="sourceLine" id="cb1-16" data-line-number="16"><span class="st"> </span><span class="kw">ggtitle</span>(<span class="st">"Evolution of Bitcoin price"</span>) <span class="op">+</span></a> <a class="sourceLine" id="cb1-17" data-line-number="17"><span class="st"> </span><span class="kw">ylab</span>(<span class="st">"bitcoin price ($)"</span>) <span class="op">+</span></a> <a class="sourceLine" id="cb1-18" data-line-number="18"><span class="st"> </span><span class="kw">theme_ipsum</span>()</a> <a class="sourceLine" id="cb1-19" data-line-number="19"></a> <a class="sourceLine" id="cb1-20" data-line-number="20"><span class="co"># Turn it interactive with ggplotly</span></a> <a class="sourceLine" id="cb1-21" data-line-number="21">p <-<span class="st"> </span><span class="kw">ggplotly</span>(p)</a> <a class="sourceLine" id="cb1-22" data-line-number="22">p</a> <a class="sourceLine" id="cb1-23" data-line-number="23"></a> <a class="sourceLine" id="cb1-24" data-line-number="24"><span class="co"># save the widget</span></a> <a class="sourceLine" id="cb1-25" data-line-number="25"><span class="co"># library(htmlwidgets)</span></a> <a class="sourceLine" id="cb1-26" data-line-number="26"><span class="co"># saveWidget(p, file=paste0( getwd(), "/HtmlWidget/ggplotlyAreachart.html"))</span></a></code></pre></div> <h1 id="using-plot_ly">Using <code>plot_ly()</code></h1> <hr /> <div class="row"> <div class="col-md-6 col-sm-12 align-self-center"> <p>The <code>ggplotly()</code> function above takes as input a ggplot2 chart and turn it interactive.</p> <p>But the <code>plotly</code> package also allows to build interactive charts using its own function: <code>plot_ly()</code>.</p> <p><u>Pro</u>: it will allows a greater control of chart style. See the whole <a href="https://plot.ly/r/reference/">API</a> for customization.</p> <p><u>Con</u>: you have to learn a new API, although you probably already know <code>ggplot2</code></p> </div> <div class="col-md-6 col-sm-12"> <center> <iframe src="HtmlWidget/plotlyAreachart.html" height="600" width="700" style="border:none;"> </iframe> </center> </div> </div> <div class="sourceCode" id="cb2"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb2-1" data-line-number="1"><span class="co"># library</span></a> <a class="sourceLine" id="cb2-2" data-line-number="2"><span class="kw">library</span>(plotly)</a> <a class="sourceLine" id="cb2-3" data-line-number="3"> </a> <a class="sourceLine" id="cb2-4" data-line-number="4"><span class="co"># Create data</span></a> <a class="sourceLine" id="cb2-5" data-line-number="5">var1 <-<span class="st"> </span><span class="kw">seq</span>(<span class="dv">1</span>,<span class="dv">8</span>)</a> <a class="sourceLine" id="cb2-6" data-line-number="6">var2 <-<span class="st"> </span><span class="kw">c</span>(<span class="dv">0</span>,<span class="dv">1</span>,<span class="dv">4</span>,<span class="dv">1</span>,<span class="dv">8</span>,<span class="dv">7</span>,<span class="dv">5</span>,<span class="dv">4</span>)</a> <a class="sourceLine" id="cb2-7" data-line-number="7">var3 <-<span class="st"> </span><span class="kw">c</span>(<span class="dv">7</span>,<span class="dv">8</span>,<span class="dv">4</span>,<span class="dv">2</span>,<span class="dv">1</span>,<span class="dv">2</span>,<span class="dv">0</span>,<span class="dv">1</span>)</a> <a class="sourceLine" id="cb2-8" data-line-number="8"></a> <a class="sourceLine" id="cb2-9" data-line-number="9"><span class="co"># Area chart with 2 groups</span></a> <a class="sourceLine" id="cb2-10" data-line-number="10">p <-<span class="st"> </span><span class="kw">plot_ly</span>(<span class="dt">x =</span> var1, <span class="dt">y =</span> var2, <span class="dt">type=</span><span class="st">"scatter"</span>, <span class="dt">mode=</span><span class="st">"markers"</span>, <span class="dt">fill =</span> <span class="st">"tozeroy"</span>)</a> <a class="sourceLine" id="cb2-11" data-line-number="11">p <-<span class="st"> </span><span class="kw">add_trace</span>(p, <span class="dt">x =</span> var1, <span class="dt">y =</span> var3, <span class="dt">type=</span><span class="st">"scatter"</span>, <span class="dt">mode=</span><span class="st">"markers"</span>, <span class="dt">fill =</span> <span class="st">"tonexty"</span>)</a> <a class="sourceLine" id="cb2-12" data-line-number="12">p</a> <a class="sourceLine" id="cb2-13" data-line-number="13"></a> <a class="sourceLine" id="cb2-14" data-line-number="14"><span class="co"># save the widget</span></a> <a class="sourceLine" id="cb2-15" data-line-number="15"><span class="co"># library(htmlwidgets)</span></a> <a class="sourceLine" id="cb2-16" data-line-number="16"><span class="co"># saveWidget(p, file=paste0( getwd(), "/HtmlWidget/plotlyAreachart.html"))</span></a></code></pre></div> <!-- Close container --> </div> <!-- ============================ RELATED SECTION ============================ --> <section class="bg-light" id="portfolio_landing" style="padding-top: 30px; 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