title: Highcharts activity gauge in Shiny
body: <p>I'm trying to make Activity gauge from Highcharts in Shiny with rCharts. Please, help.</p>
  
  <pre><code>#server.R
  library(shiny)
  library(rCharts)
  
  shinyServer(function(input, output) {
    output$chart &lt;- renderChart({
      a &lt;- Highcharts$new()
      a$series(data = 50, type = "solidgauge")
      a$addParams(dom = "chart")
      return(a)
      })
  })
  #ui.R
  library(shiny)
  library(rCharts)
  
  shinyUI(bootstrapPage(
    chartOutput("chart", "highcharts")
  
  ))
  </code></pre>