title: Custom TooltipMarker in AntV Ant Design Charts
body: <ul>
  <li>Hi everyone, i'm getting a trouble with customizing TooltipMarker in AntV Ant Design Charts with Line Shape. I have already read many documents and find any solution but none of them can help me to solve my problem.</li>
  <li>It is my config about Line Shape:</li>
  </ul>
  <pre><code>const data = [
      264, 417, 438, 887, 309, 397,
    ];
  const config = {
      height: 60,
      autoFit: false,
      data,
      smooth: true,
      tooltip: {
        showMarkers: true,
        marker: {
          
        },
      }
    };
  &lt;TinyLine {...config} /&gt;
  </code></pre>
  <ul>
  <li>I have already known that showMarker can be show a marker wheater or not, but i dont know how to cutomize marker</li>
  <li>I need to customize from <a href="https://i.stack.imgur.com/w9KaP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w9KaP.png" alt="initial" /></a> to <a href="https://i.stack.imgur.com/FD0Hv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FD0Hv.png" alt="result" /></a> ( the circle in the line )</li>
  <li>I hope someone help me with this problem. Thanks for reading my questions. Have a nice working days.</li>
  </ul>