title: R (shiny): Drop down menu to display plots that I've already created in server
body: <p>In the r shiny server, I've made multiple ggplots with their own names. Eg:</p>
  <pre><code>output$California &lt;- renderPlot(ggplot(cali_graph, aes(.....
  output$Alaska &lt;- renderPlot(ggplot(alaska_graph, aes(.....
  output$Texas &lt;- renderPlot(ggplot(texas_graph, aes(.....
  </code></pre>
  <p>In the r shiny UI, I've made a dropdown menu with options for every state that I have a graph made for:</p>
  <pre><code> selectInput(&quot;select&quot;, &quot;Select a state to view its graph&quot;, choices = list(&quot;California&quot;,&quot;Alaska&quot;, &quot;Texas&quot;))  
  </code></pre>
  <p>How do I link each dropdown menu option to the plots I've already made in the server?</p>