title: How can I upside down and limitLine in charts in Xcode
body: <p>I made a android app and I'm making iOS app now.</p>
  
  <p>I need a graph that upside down and has limit line.</p>
  
  <p>In Android, I used MPAndroidChart.</p>
  
  <p>In Xcode, I used Charts because it is almost same likes MPAndroidChart.</p>
  
  <p>I have found I can use <code>isInverted</code> instead of <code>setInverted</code></p>
  
  <p>and ChartLimitLine instead of LimitLine.</p>
  
  <p>This is codes what I wrote.</p>
  
  <pre><code>mChart.isInverted(axis: &lt;#T##YAxis.AxisDependency#&gt;)
  mChart.ChartLimitLine(limit: 0.2, label: "")
  </code></pre>
  
  <p>I have no any idea that What is <code>YAxis.AxisDependency</code>.</p>
  
  <p>And there is an error in limit line</p>
  
  <blockquote>
    <p>"alue of type 'ScatterChartView?' has no member 'ChartLimitLine'"</p>
  </blockquote>
  
  <p>I an new in iOS, so I don't know how to solve it.</p>