<p><div><div><div><div data-width="100" data-show-faces="false" data-send="true" data-layout="button_count" data-height="21" data-href="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/"></div></div><div><a data-url="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/" data-counturl="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/" data-count="horizontal" data-text="New feature: Dropdown menus in Plotly and R" class="twitter-share-button" data-via="rbloggers" href="https://twitter.com/share"></a></div><div></div></div><div></div></div>
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(This article was first published on <strong><a href="http://moderndata.plot.ly/new-feature-dropdown-menus-in-plotly-and-r/"> R – Modern Data</a></strong>, and kindly contributed to <a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers)</a> </div>
<p>In this post we’ll showcase the new <b>dropdown menu button</b> feature. It adds a layer of interactivity that is similar to <b>shiny</b> but supported within the plotly package.</p>
<p>Adding new menu buttons is as simple as specifying the <b>updatemenus</b> parameter inside <b>layout</b>.<br>
Each dropdown menu needs to be a separate list with position parameters <b>x</b> and <b>y</b> a well as a <b>buttons</b> parameter which houses individual named items with some additional parameters. Below are some examples:</p>
<h3>Re-Styling a graph</h3>

<pre>library(plotly)

x %
  add_lines(y = ~y1, name = &quot;A&quot;) %&amp;gt;%
  add_lines(y = ~y2, name = &quot;B&quot;, visible = F)


p % layout(
  title = &quot;Drop down menus - Styling&quot;,
  xaxis = list(domain = c(0.1, 1)),
  yaxis = list(title = &quot;y&quot;),
  updatemenus = list(
    list(
      y = 0.8,
      buttons = list(

        list(method = &quot;restyle&quot;,
             args = list(&quot;line.color&quot;, &quot;blue&quot;),
             label = &quot;Blue&quot;),

        list(method = &quot;restyle&quot;,
             args = list(&quot;line.color&quot;, &quot;red&quot;),
             label = &quot;Red&quot;))),

    list(
      y = 0.7,
      buttons = list(
        list(method = &quot;restyle&quot;,
             args = list(&quot;visible&quot;, list(TRUE, FALSE)),
             label = &quot;Sin&quot;),

        list(method = &quot;restyle&quot;,
             args = list(&quot;visible&quot;, list(FALSE, TRUE)),
             label = &quot;Cos&quot;)))
  ))</pre>
<p><iframe height="600" width="1024" src="https://plot.ly/~riddhiman/375.embed"></iframe></p>
<h3>Changing chart type</h3>

<pre>library(MASS)
library(plotly)
covmat %
  add_markers(marker = list(opacity = 0.3, line = list(color = &quot;black&quot;, width = 1)))

p % layout(
  title = &quot;Drop down menus - Plot type&quot;,
  xaxis = list(domain = c(0.1, 1)),
  yaxis = list(title = &quot;y&quot;),
  updatemenus = list(
    list(
      y = 0.8,
      buttons = list(

        list(method = &quot;restyle&quot;,
             args = list(&quot;type&quot;, &quot;scatter&quot;),
             label = &quot;Scatter&quot;),

        list(method = &quot;restyle&quot;,
             args = list(&quot;type&quot;, &quot;histogram2d&quot;),
             label = &quot;2D Histogram&quot;)))
  ))</pre>
<p><iframe height="600" width="1024" src="https://plot.ly/~riddhiman/377.embed"></iframe></p>
<p><div><div><div><div data-width="55" data-show-faces="false" data-send="true" data-layout="box_count" data-height="62" data-href="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/"></div></div><div><a data-url="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/" data-counturl="https://www.r-bloggers.com/new-feature-dropdown-menus-in-plotly-and-r/" data-count="vertical" data-text="New feature: Dropdown menus in Plotly and R" class="twitter-share-button" data-via="rbloggers" href="https://twitter.com/share"></a></div><div></div></div><div></div></div>
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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="http://moderndata.plot.ly/new-feature-dropdown-menus-in-plotly-and-r/"> R – Modern Data</a></strong>.</div>
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